Skin Lesion Laser Treatment Under Cooling-Induced Vasoconstriction
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Solution Overview
Problem
Laser treatments for skin lesions often cause adverse reactions such as hyperpigmentation, erythema, and scars due to inflammation triggered by damage to capillary loops and keratinocytes, with existing methods failing to effectively minimize these effects.
Innovation Solution
A laser device that induces vasoconstriction at the treatment site using a cooling unit to reduce blood flow, minimizing inflammation and preserving capillary loops, combined with image analysis for precise targeting and a heater to prevent fogging on the light transmitting member.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If laser treatment is applied to skin lesions, then the skin lesions can be treated, but inflammation and adverse reactions such as hyperpigmentation and erythema occur due to damage to capillary loops and keratinocytes
Solution Approach 1:
The cooling unit is activated before laser irradiation to induce vasoconstriction in the treatment area. This preliminary cooling action constricts capillary loops and reduces blood flow, protecting them from laser-induced damage before the laser is applied, thereby preventing inflammation and adverse reactions while maintaining treatment effectiveness
2Object-affected harmful factors
If cooling is applied to induce vasoconstriction, then inflammation is reduced, but the light transmitting member may fog up due to temperature difference
Solution Approach 1:
A heater is introduced as an intermediary element attached to the light transmitting member. The heater compensates for excessive cooling by generating heat, preventing condensation and fogging on the optical surface while allowing the cooling unit to maintain vasoconstriction in the treatment area, thus preserving both inflammation reduction and optical clarity
3Ease of operation
If the light transmitting member is cooled directly, then vasoconstriction is achieved, but fogging occurs on the light transmitting member surface
Solution Approach 1:
The system applies different thermal treatments to different locations: the cooling unit is applied to the skin contact surface to induce vasoconstriction, while the heater is applied to the light transmitting member surface to prevent fogging. This localized differentiation allows simultaneous achievement of vasoconstriction control and surface clarity maintenance
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
Minimizes adverse reactions by reducing hemoglobin exposure to laser energy, allowing for precise and efficient treatment of skin lesions with reduced hyperpigmentation and erythema, and preventing fogging for clear imaging.
Implementation Method 1
a cooling unit that causes the skin contacting surface of the light transmitting member to cool, thereby allowing vasoconstriction of a treatment site to occur by cooling the treatment site with the skin contacting surface
Implementation Method 2
a heater attached to the light transmitting member, where the control unit controls the heater to prevent or delay fogging on the light transmitting member
Implementation Method 3
a light transmitting member, which includes a top surface that forms a laser transmission surface and a bottom surface that forms a skin contacting surface, allowing a treatment laser beam from the laser source to transmit from the laser transmission surface to the skin contacting surface
Data Source
Figure 1A~1B
Figure 2
Figure 3A~3F
AI summary
A laser device can provide a prompt, precise, and stable laser therapy in that it can: (i) minimize post-treatment adverse reactions, such as hyperpigmentation, erythema, etc., by using a cooling device to induce vasoconstriction and perform laser treatment of the skin lesion areas under vasoconstriction to minimize occurrence of inflammation from irradiation of laser on normal tissues and capillary loops, when using laser to treat pigmentary disorders of the skin; (ii) minimize adverse reactions associated with laser treatments by promptly and precisely completing laser treatment specifically targeting the lesion area by capturing and analyzing the images of the skin lesion area under the area-specific vasoconstriction performed by using the cooling device; (iii) prevent or significantly delay occurrence of fogging onto the light transmitting member by using a cooling method; (iv) ensure the complete contact between the skin contact surface of the light transmitting member and the skin lesion by using a sensor; (v) target the laser beam using a scanner; and (vi) ensure the complete coverage of laser irradiation on the skin lesion by irradiating the laser beam in an overlapping manner.