Dermatological Cryospray Linear Nozzle Array

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Solution Overview

Problem

Conventional cryotherapy devices often cause severe tissue freezing and inconsistent skin pigmentation changes, leading to undesirable side effects such as hypopigmentation or hyperpigmentation, due to inadequate control over cryogen delivery and skin freezing conditions.

Innovation Solution

A dermatological cryospray device with a linear array of orifices that delivers a planar spray of cryogen or cold gas to the skin, allowing for uniform and controlled skin freezing, reducing adverse effects by maintaining consistent cooling treatment over large areas.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If conventional cryoprobes are used to freeze skin tissue, then skin pigmentation can be affected, but severe tissue freezing and cellular damage occur leading to hypopigmentation or hyperpigmentation

Engineering Contradiction:

Improveskin pigmentation controlVSAvoidtissue damage

Core Design Contradiction:

ReliabilityVSObject-affected harmful factors

Solution Approach 1:

The cryogen delivery system is segmented into multiple nozzles arranged in a linear array, allowing distributed cooling across the treatment area. This segmentation enables more uniform temperature distribution and prevents localized severe freezing that causes tissue damage and pigmentation changes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The linear array of nozzles delivers cryogen at different locations across the treatment area, creating localized cooling zones that can be precisely controlled. This allows different regions to receive appropriate cooling intensity, preventing excessive freezing damage while achieving desired pigmentation effects.

Inventive Principle:

Principle #3Local quality

2Temperature

If conventional cryotherapy methods are used, then skin cooling can be achieved, but inconsistent skin freezing conditions lead to unpredictable pigmentation changes

Engineering Contradiction:

Improveskin coolingVSAvoidfreezing consistency

Core Design Contradiction:

TemperatureVSManufacturing precision

Solution Approach 1:

The linear array of multiple nozzles divides the cooling process into multiple simultaneous cooling zones, each contributing to the overall temperature distribution. This segmentation ensures more consistent freezing conditions across the treatment area by preventing hot spots and ensuring uniform cryogen delivery.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Multiple nozzle outputs are merged into a coordinated cooling pattern across the treatment area. The combined effect of all nozzles operating simultaneously creates consistent freezing conditions that predictably affect skin pigmentation without the variability of single-point or manual methods.

Inventive Principle:

Principle #5Merging (Combining)

3Temperature

If conventional cryosurgery procedures are used, then tissue freezing can be achieved, but severe freezing generates cellular and visible skin damage

Engineering Contradiction:

Improvetissue freezingVSAvoidcellular damage

Core Design Contradiction:

TemperatureVSObject-generated harmful factors

Solution Approach 1:

The freezing process is segmented across multiple nozzle positions, distributing the thermal load and preventing any single location from experiencing severe freezing damage. This segmented approach achieves the desired pigmentation effect while minimizing cellular damage and visible skin injury.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The linear array of nozzles delivers partial freezing action across multiple locations rather than excessive freezing at a single point. This distributed partial freezing achieves the cumulative pigmentation effect while keeping individual freezing intensity below the threshold for severe tissue damage.

Inventive Principle:

Principle #16Partial or excessive 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 device provides consistent and reliable skin freezing with reduced side effects, enabling precise control over skin pigmentation changes, effectively treating conditions like hypopigmentation and hyperpigmentation while minimizing tissue damage.

Implementation Method 1

directing a planar spray of cryogen or cold gas through a linear array of orifices of the cryospray applicator to cool the area of the skin tissue

Methodology Applied

Scientific EffectCryogen spray cooling: Cooling

Implementation Method 2

controlled freezing of biological tissue, such as skin tissue, can produce various effects

Methodology Applied

Scientific EffectFreezing: Freezing

Data Source

PatentUS11786286B2Dermatological cryospray devices having linear array of nozzles and methods of use

Publication Date: 2023.10.17 R2 TECHNOLOGY INC

AI summary

The present invention is directed to improved systems, devices, and methods for delivery of a cryogen to the skin of a patient for skin treatment. A cryospray device configured to deliver a cryogen to a patient's skin can include an applicator, a supply channel, and a nozzle assembly. The applicator can include a head portion, and the supply channel can extend through at least a portion of the head portion. The nozzle assembly can be coupled to the head portion and can be fluidly coupled to the supply channel. The nozzle assembly can include a linear array of orifices that are configured to direct a planar spray of the cryogen to cool an area of a skin tissue of the patient in a linear cooling treatment.