Laser surgical device and surgical method thereof
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Solution Overview
Problem
Conventional laser treatment devices cause skin damage and pain due to thermal energy accumulation and lack effective cooling systems, particularly in spray-type cooling methods that wear components and rely on practitioner experience, leading to high costs and skin damage.
Innovation Solution
A laser treatment device with a cooling system that includes a sensing unit to measure skin temperature, a cooling module with a refrigerant control system using a thermoelectric element to adjust refrigerant temperature and flow, and a control module to optimize refrigerant spraying before, during, and after laser irradiation, minimizing skin damage and pain.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If spray-type cooling is used to cool the skin during laser treatment, then cooling effect is improved, but component wear increases and durability decreases
Solution Approach 1:
The patent implements a feedback control system where a sensor detects skin temperature in real-time during laser treatment, and this temperature information is fed back to automatically adjust the refrigerant spray amount and flow rate. This closed-loop control ensures optimal cooling effect while preventing excessive spray that would cause component wear, thereby resolving the contradiction between cooling effectiveness and component durability
Solution Approach 2:
The patent employs dynamic adjustment of cooling parameters during the treatment process. The refrigerant spray amount, flow rate, and temperature are continuously adjusted based on real-time skin temperature measurements and treatment conditions. This dynamic control optimizes the cooling effect at each moment while avoiding excessive spray pressure that would damage components, thus resolving the contradiction between cooling performance and component reliability
2Productivity
If high energy laser is used for short time to achieve heat ablation, then treatment effectiveness is improved, but skin damage and pain increase
Solution Approach 1:
The patent applies preliminary cooling to the skin before laser irradiation begins. The refrigerant spray system pre-cools the treatment area, creating a protective thermal buffer that reduces the risk of skin damage and pain during subsequent high-energy laser exposure, while maintaining treatment effectiveness
Solution Approach 2:
The patent introduces refrigerant spray as an intermediary cooling medium between the laser and the skin. This intermediary layer absorbs excess thermal energy and protects the skin from direct thermal damage while allowing the laser to maintain its therapeutic effect on the target tissue
3Temperature
If refrigerant spray amount is increased to improve cooling effect, then skin temperature control is improved, but sudden pressure rise occurs
Solution Approach 1:
The patent uses feedback control where skin temperature sensors continuously monitor the treatment area and automatically adjust refrigerant spray parameters. This prevents excessive spray amount that would cause pressure spikes, while maintaining adequate cooling effect through precise, real-time adjustments based on actual skin temperature conditions
4Device complexity
If conventional spray cooling is used without automated control, then device complexity is reduced, but cooling precision and consistency decrease
Solution Approach 1:
The patent implements a self-service automated control system where the device autonomously monitors skin temperature and adjusts refrigerant spray parameters without requiring practitioner intervention. The system self-regulates cooling based on real-time feedback, achieving high precision cooling while maintaining reasonable device complexity through integrated sensors and control algorithms
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 effectively controls skin temperature and refrigerant flow to prevent skin damage and pain, reduce component wear, and adapt to various treatment types, while reducing maintenance costs and correcting temperature measurement errors.
Implementation Method 1
a refrigerant condition control unit which applies a thermal energy to the refrigerant by using a thermoelectric element located between the flow rate control unit and the nozzle
Implementation Method 2
a sensing unit which detects a temperature of surface of the patient's skin before, during, or after the skin is heated by the laser
Implementation Method 3
a cooling module including: an inlet which receives a refrigerant from a refrigerant storage part; a nozzle which sprays the refrigerant on the skin
Data Source
AI summary
A laser treatment device may include a laser module which irradiates a patient's skin with a laser. The device may also include a sensing unit which detects a temperature of surface of the patient's skin before, during, or after the skin is heated by the laser, a cooling module which includes an inlet which receives a refrigerant from a refrigerant storage unit, a nozzle which sprays the refrigerant on the skin, and a conduit which connects the inlet with the nozzle. The device may further include an flow rate control unit which controls a spray amount of the refrigerant by using a valve which is positioned on the conduit and connects or disconnects the inlet with or from the nozzle, and a refrigerant condition control unit which applies a thermal energy to the refrigerant by using a thermoelectric element located between the flow rate control unit and the nozzle.