Trocar Lens Cleaning System for Laparoscopic Surgery

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Solution Overview

Problem

In laparoscopic surgery, the time-consuming process of cleaning the scope lens during procedures disrupts the surgeon's view and requires frequent removal and reinsertion of the scope, leading to longer operation times and reduced efficiency.

Innovation Solution

A trocar with integrated cleaning components, including a brush for removing solid debris, a sponge for wiping fluid, and grooves for wicking away debris and fluid, allowing for lens cleaning without fully removing the scope, along with a saline spigot for injection to enhance cleaning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If the scope is removed for cleaning, then the lens can be cleaned, but the surgeon loses orientation and vision during the cleaning process

Engineering Contradiction:
Improvelens cleaning capabilityVSAvoidprocedure time
Core Design Contradiction:
Ease of operationVSLoss of time

Solution Approach 1:

The cleaning components are pre-positioned within the trocar shaft before the scope is inserted. When the scope lens becomes stained, the surgeon can immediately access the pre-positioned brush, sponge, and grooves to clean the lens without removing the scope, thus maintaining continuous vision and orientation throughout the procedure.

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The trocar shaft serves as an intermediary structure that houses the cleaning components. This allows the cleaning function to be mediated through the trocar system rather than requiring direct removal of the scope, enabling lens cleaning while the scope remains in place and the surgeon maintains visual contact with the surgical field.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Ease of operation

If the scope is removed for cleaning, then the lens can be cleaned, but the surgeon must reorient to the patient's anatomy

Engineering Contradiction:
Improvelens cleaning capabilityVSAvoidreorientation requirement
Core Design Contradiction:
Ease of operationVSDevice complexity

Solution Approach 1:

The cleaning components are pre-positioned within the trocar shaft before the scope is inserted. When the scope lens becomes stained, the surgeon can immediately access the pre-positioned brush, sponge, and grooves to clean the lens without removing the scope, thus maintaining continuous vision and orientation throughout the procedure.

Inventive Principle:
Principle #10Preliminary action

3Reliability

If the trocar is disassembled for cleaning, then the trocar can be thoroughly cleaned, but the procedure time increases

Engineering Contradiction:
Improvetrocar cleaning thoroughnessVSAvoidprocedure time
Core Design Contradiction:
ReliabilityVSLoss of time

Solution Approach 1:

The cleaning system is segmented into multiple functional components: a brush for solid debris, a sponge for fluid, and grooves for wicking. These segmented components work together to provide comprehensive cleaning of the trocar shaft interior surface without requiring disassembly of the trocar assembly, enabling thorough cleaning while maintaining procedure efficiency.

Inventive Principle:
Principle #1Segmentation

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

Enables quick and efficient cleaning of the scope lens within the trocar, minimizing distraction and maintaining the surgeon's orientation, thereby reducing procedure time and improving surgical efficiency.

Implementation Method 1

a brush configured to remove solid debris from the lens of the scope and positioned on an inside wall of the trocar

Methodology Applied
Scientific EffectFriction: Friction

Implementation Method 2

a sponge configured to wipe fluid from the lens of the scope and positioned on an inside wall of the trocar

Methodology Applied
Scientific EffectAbsorption: Absorption (physical)

Implementation Method 3

grooves configured towick the solid debris and fluid away from the lens of the scope and positioned at a distal end of the trocar shaft

Methodology Applied
Scientific EffectCapillary action: Capillary Action

Data Source

PatentUS9545194B2Multi-purpose trocar with lens cleaner
Publication Date: 2017.01.17 JOHNS HOPKINS UNIVERSITY
  • US9545194B2 patent drawing
  • US9545194B2 patent drawing
  • US9545194B2 patent drawing

AI summary

An embodiment in accordance with the present invention provides a scope lens cleaning system disposed within a trocar shaft to allow the surgeon to clean the scope lens without losing orientation of the operative field. The lens cleaning system is configured to remove solid debris, liquid, and condensation from the scope lens. The cleaning system includes a first cleaning component configured to remove the solid debris from the scope lens. A second cleaning component is configured to remove the liquid and condensation from the scope lens. A third cleaning component wicks the solid debris and liquid away from the cleaning components and the scope lens and allows it to fall out the end of the trocar shaft. The cleaning system minimizes distraction during the surgical procedure to improve efficiency and safety.