Blunt Loop Dissector for Precise Tissue Cavity Formation
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Solution Overview
Problem
Existing surgical instruments lack the precision and control to form small-dimension cavities at tissue sites, leading to improper placement and device migration during implantation procedures.
Innovation Solution
A manually operable device with a controllable blunt dissection loop having elasticity, appropriate angulation, and rigidity, featuring a loop cross section configured for precise cavity size and configuration, utilizing a filament within a tube to form a loop for controlled tissue separation without cutting.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If fingers are used for blunt dissection, then large-scale tissue separation can be achieved, but precision and control for small-dimension cavity formation are insufficient
Solution Approach 1:
The device segments the tissue separation function into a specialized loop dissector tool with a curved loop tip, separating the precision cavity formation task from general tissue manipulation. The loop tip is specifically designed for precise small-dimension cavity formation while the shaft provides manipulation control.
Solution Approach 2:
The patent introduces a loop dissector as an intermediary tool between the surgeon's fingers and the tissue. This mediator provides both the precision needed for small cavity formation and the control required for accurate placement, overcoming the limitations of direct finger manipulation.
2Adaptability or versatility
If a rigid dissection tool is used, then structural stability is maintained, but adaptability to tissue planes and precise cavity configuration is reduced
Solution Approach 1:
The loop dissector applies local quality by making only the loop tip flexible to conform to tissue planes, while the shaft remains rigid for stable manipulation. This localized flexibility allows the device to adapt to tissue contours without compromising overall structural stability.
Solution Approach 2:
The device incorporates dynamic properties through the flexible loop tip that can adapt its shape during tissue dissection, while maintaining a stable rigid shaft. This dynamic adaptation allows the loop to conform to varying tissue planes while the overall device composition remains stable.
3Reliability
If improper cavity formation occurs, then surgical procedure time is reduced, but device placement accuracy and prevention of migration are compromised
Solution Approach 1:
The loop dissector performs preliminary action by creating a precisely fitted cavity before device implantation. The cavity is formed to match the device dimensions exactly, ensuring proper placement and preventing migration. This preliminary precision work avoids the need for corrective procedures later.
Solution Approach 2:
The patent replaces the mechanical system of finger-based tissue separation with a specialized loop dissector tool that provides consistent, repeatable precision. This substitution eliminates the variability and imprecision of manual manipulation, ensuring reliable cavity formation that prevents device migration.
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
Ensures precise cavity formation and prevents device migration by providing a good fit, ensuring the device remains in place without cutting or migrating.
Implementation Method 1
a controllable blunt dissection loop having elasticity in certain dimensions, appropriate angulation, and rigidity in other dimensions
Data Source
AI summary
A device includes a tube and a filament. The tube has a first end, a second end, and a center axis disposed between the first end and the second end. The filament is disposed at the first end and having a portion configured as a loop aligned on an extension of a lumen of the tubular segment. A portion of the filament is configured for axial movement within the lumen.