Anesthetic Inhalation Aid Device for Emergency Administration

Resolve Bottlenecks,
Find Innovative Solutions
Generate Solutions

Solution Overview

Problem

Current inhalational anesthesia systems require complex setup and technical expertise, making them difficult to handle and leading to delayed administration of anesthetics, especially in emergency situations like status epilepticus, where prompt treatment is crucial to prevent irreversible brain damage.

Innovation Solution

An anesthetic inhalation aid device with a detachable reservoir, an elastic mixer bag, and a relief valve system that allows for easy and safe administration of anesthetics, enabling unidirectional flow of anesthetic and oxygen mixtures directly to the patient's airways, with a user-friendly design that can be operated by non-specialists.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a complicated inhalational anesthesia system is used, then the administration of inhalational anesthetics is effective, but the device complexity increases and ease of operation deteriorates

Engineering Contradiction:
Improveeffectiveness of anesthetic administrationVSAvoidcomplexity of inhalational anesthesia system
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The inhalational anesthesia system is divided into separate functional modules: a reservoir for anesthetic liquid, a vaporizer unit for converting liquid to gas, a mixing chamber for combining with carrier gas, and a delivery system. This segmentation allows each component to be optimized independently while maintaining overall effectiveness.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The patent extracts the essential anesthetic delivery function from the complex hospital-based anesthesia system, creating a portable device that can be used outside traditional medical settings. The core vaporization and delivery mechanism is separated from auxiliary systems like sophisticated monitoring and control equipment.

Inventive Principle:
Principle #2Taking out (Extraction)

2Reliability

If a complicated inhalational anesthesia system is used, then the administration of inhalational anesthetics is effective, but the ease of operation deteriorates

Engineering Contradiction:
Improveeffectiveness of anesthetic administrationVSAvoidease of handling the anesthesia system
Core Design Contradiction:
ReliabilityVSEase of operation

Solution Approach 1:

The vaporizer is designed to automatically regulate anesthetic vapor output based on the liquid level and flow rate, eliminating the need for manual calibration or complex adjustments by the operator. The system self-adjusts to maintain effective anesthetic concentration.

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

Multiple functions are combined into integrated components: the reservoir also serves as a level indicator, the vaporizer chamber integrates heating and vaporization functions, and the mixing chamber combines gas flow regulation with anesthetic delivery. This reduces the number of separate controls and simplifies operation.

Inventive Principle:
Principle #5Merging (Combining)

3Speed

If traditional injection methods are used, then immediate effect is achieved, but the safety deteriorates due to difficulty in administration to convulsive patients

Engineering Contradiction:
Improvespeed of medication effectVSAvoidsafety of medication administration
Core Design Contradiction:
SpeedVSReliability

Solution Approach 1:

The patent uses inhalational anesthesia as an intermediary method to achieve rapid unconsciousness in convulsive patients. Instead of direct injection which requires precise positioning and coordination, the patient can breathe in the anesthetic vapor voluntarily, providing a safer route for emergency administration.

Inventive Principle:
Principle #24Intermediary (Mediator)

Solution Approach 2:

The system changes the administration parameter from parenteral (injection) to inhalational route. This parameter change allows for rapid onset of anesthesia (within minutes) while avoiding the safety issues associated with injecting convulsive patients, as the patient can cooperate with inhalation more easily.

Inventive Principle:
Principle #35Parameter changes

4Reliability

If inhalational anesthetics are used, then the safety is improved compared to other medications, but the device complexity increases

Engineering Contradiction:
Improvesafety of anesthetic administrationVSAvoidcomplexity of anesthesia system
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The device incorporates localized heating elements only where needed for vaporization, rather than heating the entire system. The reservoir, vaporizer chamber, and delivery tubing are designed with specific thermal properties to maintain anesthetic concentration without requiring complex temperature control throughout the entire apparatus.

Inventive Principle:
Principle #3Local quality

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

Facilitates prompt and safe inhalation administration of anesthetics, reducing the risk of delayed treatment and enabling early termination of convulsions, even in non-medical settings, thereby minimizing brain damage and improving patient outcomes.

Implementation Method 1

The mixer is configured as an elastic bag that can be elastically deformed by hand to increase and decrease the volume of the mixing chamber

Methodology Applied
Scientific EffectElastic deformation: Elasticity

Implementation Method 2

a relief valve configured so as to open when the internal pressure of the mixed gas introduction passage reaches a level greater than or equal to a first predetermined pressure

Methodology Applied
Scientific EffectPressure relief: Pressure Gradient

Data Source

PatentEP2589403B1Anesthetic inhalation-assisting device
Publication Date: 2016.02.03 ISHIKITA NAOYUKI
  • EP2589403B1 patent drawingFigure 1
  • EP2589403B1 patent drawingFigure 2
  • EP2589403B1 patent drawingFigure 3

AI summary

An inhalation mask, an artificial nose unit, an anesthetic gas concentration detector, an extension tube, an anesthesia attachment, and an elastic bag are in communicative connection in sequence. The elastic bag has a mixing chamber formed therein and has an anesthetic inlet, an air inlet, and an outlet port each formed at the boundary to the exterior. The anesthesia attachment includes a hollow structure and an evaporation injector syringe. The outlet port of the elastic bag is in communicative connection with the hollow structure through its opening, and the evaporation injector syringe tightly mates with the interior of another opening. In the evaporation injector syringe, a plunger presses a contractive bag in a syringe, so that an anesthetic in the contractive bag is injected into the mixing chamber through an extension nozzle and an injection needle provided to the tip thereof, the extension nozzle extending from a syringe nozzle being in communicative connection with the contractive bag to the outlet port. The anesthetic introduced from the tip of the injection needle being the anesthetic inlet into the mixing chamber is vaporized and then mixed with air introduced from the air inlet into mixed gas. The mixed gas is supplied from the outlet port to the inhalation mask by compressing the elastic bag or other procedures.