Endoscope Insertion Tool Fluid Sealing Mechanism

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Solution Overview

Problem

Existing endoscope insertion assisting tools face challenges in preventing fluid leakage from body cavities due to internal pressure, which complicates the insertion process and reduces operational efficiency.

Innovation Solution

The development of an insertion assisting tool equipped with a fluid sealing device, a liquid storing part, a suction device, a liquid absorbing member, and an inflatable balloon, along with an extendable and contractible member, to prevent fluid leakage and enhance insertion operability.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Ease of operation

If an insertion assisting tool is inserted into a body cavity, then the insertion section can be guided into deep parts of the alimentary canal, but body fluid flows backward from the gap between the insertion assisting tool and the insertion section and leaks outside from the base end opening

Engineering Contradiction:
Improveinsertion guidanceVSAvoidfluid leakage
Core Design Contradiction:
Ease of operationVSObject-generated harmful factors

Solution Approach 1:

A fluid sealing device is introduced as an intermediary component between the insertion assisting tool and the insertion section. This sealing device includes a sealing member that fits into a groove on the insertion section, creating a fluid-tight barrier that prevents body fluid from flowing backward through the gap while maintaining the guidance function of the insertion assisting tool.

Inventive Principle:
Principle #24Intermediary (Mediator)

2Object-generated harmful factors

If a fluid sealing device is added to prevent fluid leakage, then fluid leakage is prevented, but the device complexity increases

Engineering Contradiction:
Improvefluid leakageVSAvoidstructure complexity
Core Design Contradiction:
Object-generated harmful factorsVSDevice complexity

Solution Approach 1:

The sealing member of the fluid sealing device is designed as a flexible member that can be made of elastomeric material. This flexible shell can deform to conform to the groove shape on the insertion section, creating an effective seal without requiring complex mechanical structures. The flexibility allows the sealing member to adapt to slight variations in the insertion section geometry while maintaining fluid tightness.

Inventive Principle:
Principle #30Flexible shells and thin films

3Object-generated harmful factors

If the insertion assisting tool is designed with a fluid sealing device, then fluid leakage is prevented, but the insertion process becomes more complex

Engineering Contradiction:
Improvefluid leakageVSAvoidinsertion efficiency
Core Design Contradiction:
Object-generated harmful factorsVSProductivity

Solution Approach 1:

The fluid sealing device is pre-assembled on the insertion assisting tool before insertion into the body cavity. The sealing member is positioned in advance in the groove of the insertion section, so that when the insertion assisting tool is inserted, the sealing action occurs automatically without requiring additional steps or manual adjustment during the insertion process.

Inventive Principle:
Principle #10Preliminary action

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 tool effectively seals the space between the insertion assisting tool and the endoscope, stores and manages body fluid, and provides enhanced curving operability, reducing leakage and improving the insertion process's efficiency and safety.

Implementation Method 1

an inflatable and deflatable balloon attached to a tip end peripheral portion of an endoscope insertion section

Methodology Applied
Scientific EffectElasticity: Elasticity

Implementation Method 2

a suction device attached to the liquid storing part of the insertion assisting tool

Methodology Applied
Scientific EffectSuction: Suction

Data Source

PatentUS9433759B2Insertion assisting tool for endoscope
Publication Date: 2016.09.06 FUJIFILM CORP
  • US9433759B2 patent drawing
  • US9433759B2 patent drawing
  • US9433759B2 patent drawing

AI summary

An insertion assisting tool for an endoscope into which an insertion section of the endoscope is inserted from a base end portion side. The insertion assisting tool may include a fluid sealing device which seals a space between a base end part of the insertion assisting tool and the endoscope insertion section, the space being formed while the insertion section of the endoscope is inserted into the base end portion side.