Memory Elastic Wire Sleeve for Maxillary Sinus Membrane Peeling
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Solution Overview
Problem
Current methods for stripping away maxillary sinus floor mucosa, such as sinus floor lifting by windowing or accessing through the alveolar crest, face limitations in lifting height and risk of mucous perforation, especially when attempting to increase bone height beyond 5 mm, due to the limited range of mucous membrane stripping and increased tension.
Innovation Solution
A memory elastic filament cannula with a primary and secondary stripping structure, featuring a hollow cannula and an ultra-elastic or memory elastic filament that extends and changes shape to facilitate effective mucous membrane removal, allowing for larger stripping ranges and reduced perforation risk through adjustable and adaptable stripping.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Length of stationary object
If sinus floor lifting by windowing in sidewall is used to strip away large area of sinus floor mucosa, then the lifting height and bone height increase effectively, but the operation complexity increases and perforation likelihood increases
Solution Approach 1:
The device is divided into two functional parts: a hollow cannula for initial access and mucosa elevation, and a memory elastic filament for subsequent large-area mucosa stripping. This segmentation allows each component to perform its specific function optimally, reducing overall operational complexity while achieving effective lifting heights.
Solution Approach 2:
The memory elastic filament acts as an intermediary tool that extends from the hollow cannula. It mediates between the limited access through the alveolar crest and the need to strip large areas of mucosa, enabling effective mucosa removal without requiring complex sidewall windowing procedures.
2Reliability
If sinus floor lifting by accessing through alveolar crest is used to reduce operative wound, then the postoperative complications decrease, but the lifting height is limited to 5-7 mm due to small stripping range
Solution Approach 1:
The memory elastic filament is designed to be dynamic and adaptable. It can extend beyond the hollow cannula, be bent into various shapes (double strands, arcs, cones), and adjust its configuration during the procedure. This dynamic capability allows the device to achieve large stripping ranges through the limited access of alveolar crest approach, enabling lifting heights exceeding 7mm while maintaining the advantages of minimally invasive surgery.
3Adaptability or versatility
If the stripping range is increased to lift more bone dust and increase bone height, then the implant indications extend, but the perforation likelihood increases
Solution Approach 1:
The memory elastic filament changes its physical parameters (shape, extension length, configuration) during the procedure. It can be bent into different shapes and extended to varying degrees to adapt to different anatomical conditions and stripping requirements. This parameter adaptability allows effective large-area mucosa stripping to extend implant indications while the flexible design reduces stress concentration and perforation risk.
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 memory elastic filament cannula enables broader mucous membrane stripping, achieving lifting heights of up to 23.03 ± 4.92 mm, reducing the risk of perforation and enhancing clinical applicability by providing a kit with various models and sizes for tailored operations.
Implementation Method 1
the elastic filament has ultra-elasticity and/or memory
Implementation Method 2
the elastic filament has ultra-elasticity and/or memory
Data Source
AI summary
A memory elastic wire sleeve for peeling maxillary sinus mucous membrane is adapted for implant surgeries and/or bone grafting in the regions close to the maxillary sinus floor. The memory elastic wire sleeve includes a primary peeling structure and a secondary peeling structure, wherein the primary peeling structure comprises a hollow sleeve and a peeling edge located on the top of the hollow sleeve, and can peel the maxillary sinus mucous membrane preliminarily, and the second peeling structure is a memory elastic wire which can further peel the maxillary sinus mucous membrane. The memory elastic wire sleeve is simple and dainty, and can safely and effectively peel away the maxillary sinus mucous membrane within a large range.