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Simulation-guided development of advanced PID control algorithm for skin cooling in radiofrequency lipolysis.
- Source :
-
Bio-medical materials and engineering [Biomed Mater Eng] 2024; Vol. 35 (3), pp. 303-321. - Publication Year :
- 2024
-
Abstract
- Background: The clinical outcomes of bipolar radiofrequency (RF) lipolysis, a prevalent non-invasive fat reduction procedure, hinge on the delicate balance between effective lipolysis and patient safety, with skin overheating and subsequent tissue damage as primary concerns.<br />Objective: This study aimed to investigate a novel bipolar radiofrequency lipolysis technique, safeguarding the skin through an innovative PID temperature control algorithm.<br />Methods: Utilizing COMSOL Multiphysics simulation software, a two-dimensional fat and skin tissue model was established, simulating various PID temperature control schemes. The crux of the simulation involved a comparative analysis of different PID temperatures at 45 °C, 50 °C, and 55 °C and constant power strategies, assessing their implications on skin temperature. Concurrently, a custom bipolar radiofrequency lipolysis device was developed, with ex vivo experiments conducted using porcine tissue for empirical validation.<br />Results: The findings indicated that with PID settings of Kp = 7, Ki = 2, and Kd = 0, and skin temperature control at 45 °C or 50 °C, the innovative PID-based epidermal temperature control strategy successfully maintained the epidermal temperature within a safe range. This maintenance was achieved without compromising the effectiveness of RF lipolysis, significantly reducing the risk of thermal damage to the skin layers.<br />Conclusion: Our research confirms the substantial practical utility of this advanced PID-based bipolar RF lipolysis technique in clinical aesthetic procedures, enhancing patient safety during adipose tissue ablation therapies.
Details
- Language :
- English
- ISSN :
- 1878-3619
- Volume :
- 35
- Issue :
- 3
- Database :
- MEDLINE
- Journal :
- Bio-medical materials and engineering
- Publication Type :
- Academic Journal
- Accession number :
- 38517766
- Full Text :
- https://doi.org/10.3233/BME-230185