Transparent Heating Sleeve for Ventilator Tube Condensation Control
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Solution Overview
Problem
Conventional humidification systems for ventilator gases suffer from condensation and bacterial growth issues, leading to suboptimal humidity delivery and health risks in patients, particularly in neonatal care units.
Innovation Solution
A transparent or semi-transparent polymer-based heating element sleeve is used to envelop the tubing, incorporating a self-regulated and self-limiting heater to maintain humidity and temperature, along with a humidification system design that enhances air-water interaction and uses antimicrobial coatings to reduce bacterial growth.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a heating wire is placed inside the tube to prevent condensation, then condensation is reduced, but a water plug forms that interferes with respiratory therapy
Solution Approach 1:
The heating element is extracted from the interior of the tube and placed on the exterior surface. This allows the heating function to be maintained without the heating wire being in direct contact with the gas flow, thereby preventing water plug formation while still preventing condensation through external heating of the tube surface.
Solution Approach 2:
The tube wall acts as an intermediary between the external heating element and the gas flow. The heating element heats the tube surface, which then transfers heat to the gas, preventing condensation without requiring the heating element to be inside the tube where it would create water plugs.
2Quantity of substance
If a water reservoir is used in a passover humidification system to provide humidity, then humidity is delivered, but the water reservoir becomes a breeding ground for bacteria
Solution Approach 1:
The system uses a disposable humidifier cartridge containing a small amount of water or gel that is replaced after a single use or after a short period. This eliminates the need for a reusable water reservoir that would require cleaning and maintenance, thereby preventing bacterial growth while still providing the necessary humidity.
Solution Approach 2:
The water reservoir is extracted from the main system as a separate, disposable component. This allows the humidification function to be maintained while eliminating the persistent water reservoir that would otherwise serve as a bacterial breeding ground in reusable systems.
3Quantity of substance
If conventional passover humidification is used to humidify ventilator air, then humidity is provided, but the humidity level is suboptimal
Solution Approach 1:
The system changes the physical parameters of the humidification process by using heated gas flow through a porous medium or by controlling temperature and flow rate more precisely. This allows for more accurate control of the humidity level delivered to the patient, improving upon the suboptimal humidity of conventional passover humidification.
Solution Approach 2:
The system replaces the passive mechanical passover humidification mechanism with an active controlled system that uses heated gas flow and porous media to precisely control humidity delivery, achieving more accurate and reliable humidification levels.
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 solution significantly reduces condensation and bacterial growth, improving humidity delivery and maintaining optimal temperature, thereby enhancing the effectiveness and safety of respiratory therapy.
Implementation Method 1
generates heat through a positive-temperature coefficient (PTC) heating element
Implementation Method 2
transparent or semi-transparent polymer-based heating element sleeve or sheet for the insulation of a tube delivering heated and humidified gas
Implementation Method 3
humidification system design that enhances air-water interaction
Data Source
AI summary
The present invention includes devices that relate to, for example, humidification systems for making humidified ventilator air that include a transparent or semi-transparent polymer-based heating element sleeve or sheet for the insulation of a tube delivering heated and humidified gas to a subject, comprising: a self-regulated heater and self-limiting heater, wherein the tubing is enveloped by the transparent heating sleeve, wherein the heating sleeve maintains at least one of: rates of relative humidity, absolute humidity and gas temperature, and wherein the heating sleeve envelops the tubing of inspiratory or expiratory limbs or ports connected to a mechanical ventilator providing gas to a subject.