Cryogenic Treatment Chamber for Deep Tissue Cooling
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Solution Overview
Problem
Existing methods for cold treating tissues, such as warts, are inefficient, unsafe, and poorly reproducible due to suboptimal use of cryogenic liquids, lack of deep penetration of cold, and variable application techniques, leading to incomplete treatment and potential damage to surrounding skin.
Innovation Solution
A device with a chamber that retains cold generated by cryogenic liquid evaporation, allowing direct contact with the tissue, featuring a dosing valve for controlled cryogenic liquid release, and a design that ensures efficient cold distribution and penetration, including a converging chamber shape to concentrate cold around the treatment area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cryogenic liquid is sprayed directly onto the tissue, then rapid surface cooling is achieved, but the cold does not penetrate deeply into the tissue core and the treatment is rapidly lost due to rapid evaporation
Solution Approach 1:
The patent introduces a chamber as an intermediary between the cryogenic liquid and the tissue. The chamber contains the evaporating cryogenic liquid, allowing it to act as a mediator that transfers cold to the tissue through the chamber wall rather than direct spraying. This enables sustained cold contact and deep penetration into the tissue core while preventing rapid energy loss to the environment.
Solution Approach 2:
The chamber is designed with thin wall material that allows efficient thermal conduction from the cryogenic liquid to the tissue while maintaining containment. The thin film structure enables the cold to penetrate through the chamber wall and reach deep into the tissue core, solving the problem of insufficient penetration depth while preventing rapid evaporation.
2Ease of operation
If a foam plastic applicator is used to absorb and deliver cold, then the applicator can be handled safely, but the cryogenic liquid is not utilized optimally and only the upper side of protruding tissue is frozen
Solution Approach 1:
The chamber serves as an intermediary that allows the cryogenic liquid to be contained and delivered efficiently. Instead of using foam plastic that absorbs and wastes cryogenic liquid, the chamber directly contains the liquid and delivers cold through its wall, optimizing the utilization of cryogenic liquid while maintaining safety through controlled delivery.
Solution Approach 2:
The patent utilizes the phase transition of cryogenic liquid from liquid to gas within the chamber. This phase transition occurs in a controlled environment, allowing the cold generated during evaporation to be retained and delivered to the tissue through the chamber wall, maximizing the efficiency of cryogenic liquid use.
3Productivity
If the spray can valve is not dosable and is kept depressed continuously, then continuous cryogenic liquid release occurs, but this allows cryogenic liquid to damage other tissue and creates hazardous situations
Solution Approach 1:
The chamber design ensures that the cryogenic liquid and the cold it generates are localized within the chamber and directed specifically to the treatment area. The chamber wall acts as a barrier that confines the harmful cold to the intended target, preventing damage to surrounding healthy tissue while maintaining continuous delivery capability.
4Ease of operation
If the applicator is moved from the container to the tissue without screening, then direct application is possible, but another part of the skin may be accidentally touched resulting in unwanted damage
Solution Approach 1:
The chamber acts as a protective shell that contains the cryogenic liquid and screens it from the environment during movement and application. This thin film barrier prevents accidental contact with healthy skin while allowing the applicator to be moved and positioned quickly for direct application to the target tissue.
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 enables deep and efficient cooling or freezing of tissues, reducing the risk of damage to surrounding skin, improving reproducibility, and allowing safe use by anyone, as it retains cold within the chamber and utilizes cryogenic liquid more efficiently, ensuring the entire wart is treated.
Implementation Method 1
The cold in the chamber is in direct contact with the tissue to be cooled and can thus cool off the tissue to be cooled, deeply into the core
Implementation Method 2
The wall of the chamber is preferably insulating, so that less cold is dissipated to the environment
Implementation Method 3
a first part of the chamber, in which first part the second opening is present, converges in the direction of the second opening
Implementation Method 4
The invention also relates to an assembly of such a device and a container comprising a cryogenic liquid, such as a spray can
Data Source
AI summary
The invention relates to a device for cold treating a tissue. The invention also relates to an assembly of such a device and a container comprising a cryogenic liquid, such as a spray can. The invention further relates to a method for cold treating a tissue.