Absorbent Surgical Cannula Device for Laparoscopic Lens Clarity
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Solution Overview
Problem
During laparoscopic surgery, fluid materials deposited on the cannula tend to obscure the laparoscope lens, requiring repeated cleaning, which increases the time under anesthesia and the duration of the procedure.
Innovation Solution
A surgical device with an absorbent portion comprising a plurality of absorbent discs separated by spacers, designed to absorb fluid materials from the cannula surfaces, including valves and inner and outer walls, reducing the need for frequent lens cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Illumination intensity
If the laparoscope is repeatedly removed for lens cleaning, then the lens clarity is improved, but the surgical time and anesthesia duration are increased
Solution Approach 1:
The absorbent discs are placed inside the cannula before the laparoscope is inserted, so that fluid is absorbed in advance before it can obscure the lens, eliminating the need for repeated cleaning interruptions
Solution Approach 2:
Absorbent discs are introduced as an intermediary element between the fluid source and the lens, absorbing fluid materials before they reach the lens and causing obscuration
2Quantity of substance
If the absorbent discs are made larger to increase absorption capacity, then the fluid absorption is improved, but the device complexity and difficulty of insertion are increased
Solution Approach 1:
The absorbent portion is divided into multiple separate discs rather than one large absorbent element, allowing each disc to be individually positioned and managed while collectively providing substantial absorption capacity
Solution Approach 2:
Multiple thin discs are stacked axially along the cannula length, utilizing the longitudinal dimension to provide cumulative absorption capacity without increasing the radial profile that would complicate insertion
3Length of moving object
If the absorbent discs are placed close together to maximize space utilization, then the device length is reduced, but the absorption efficiency is decreased
Solution Approach 1:
The absorbent portion is divided into multiple separate discs with spacers between them, allowing each disc to independently contact and absorb fluid from different locations along the cannula, maintaining high absorption efficiency
Solution Approach 2:
The spacers create periodic spacing between absorbent discs, allowing fluid to be absorbed in stages as the laparoscope moves through the cannula, ensuring continuous absorption capability without requiring excessive device length
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 effectively reduces the number of passes needed to clear the lens, shortening the surgical time and minimizing patient anesthesia duration.
Implementation Method 1
an absorbent portion that includes a plurality of absorbent discs separated by at least one spacer
Implementation Method 2
fluid materials deposited on the cannula tend to obscure the laparoscope lens
Data Source
AI summary
A surgical device that absorbs fluid material on a surface of a cannula comprises a handle, and an absorbent portion coupled to a first end of the handle. The absorbent portion comprises a plurality of absorbent discs separated by at least one spacer. The plurality of absorbent discs and the at least one spacer are disposed about a post, and the at least one spacer is restrained from axial movement relative to the post.