Multiple Curved Cannula for Ophthalmic Surgery
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Current cannula designs for ophthalmological surgery often require multiple incisions and complex manipulation to accurately deliver medical devices into the mammalian eye, which can be cumbersome and increase surgical trauma.
Innovation Solution
A multiple curved cannula with two or more curved segments, allowing for precise positioning of the cannula tip and minimizing the number of incisions by enabling accurate placement of medical devices with reduced strain on the device being delivered, manufactured from materials like metal, plastic, or glass.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a simple straight cannula or simply curved cannula is used, then the cannula structure is simple, but the manipulation becomes complicated and multiple incisions are required
Solution Approach 1:
The cannula incorporates multiple curved segments instead of a simple straight or single-curve design. The curved segments enable the cannula to navigate the complex anatomy of the eye, allowing accurate positioning of the distal tip in intrascleral or supraciliary spaces while maintaining a relatively simple overall structure.
Solution Approach 2:
The cannula is divided into multiple curved segments that can be configured to match the anatomical path required for delivery. This segmentation allows the cannula to achieve complex positioning capabilities through combinations of simpler curved sections, improving ease of operation without excessive complexity.
2Device complexity
If a simple straight cannula or simply curved cannula is used, then the cannula structure is simple, but the number of incisions increases
Solution Approach 1:
The multiple curved segments allow the cannula to reach distant target sites within the eye through a single incision by following the natural anatomical contours. This eliminates the need for multiple incisions while keeping the cannula structure manageable through modular curved sections.
3Measurement precision
If a cannula with multiple curved segments is used, then the positioning precision is improved, but the device complexity increases
Solution Approach 1:
The cannula is constructed from multiple discrete curved segments that can be manufactured using standard techniques and assembled in a controlled manner. This segmentation achieves high positioning precision for the distal tip while managing device complexity through modular construction.
Data Source
AI summary
A multi curved cannula comprising a proximal curved segment having a proximal end and a distal end, and a distal curved segment having a proximal end and a distal end, wherein the proximal end of the distal curved segment is adjacent the distal end of the proximal curved segment to form the multiple curved cannula.