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Enucleation of the Prostate for the Treatment of Benign Prostatic Hyperplasia Using a 980 nm Diode Laser
Published on: May 5, 2020
Angular effect of optical fiber movement on endoscopic laser prostatectomy
Danop Rajabhandharaks1, Hyun Wook Kang, Junghwan Oh
1Laser Therapy Research, American Medical Systems, San Jose, California 95134, USA.
Lasers in Surgery and Medicine
|August 18, 2012
Summary
Optimizing laser prostatectomy fiber movement is crucial. A 30° sweeping angle (SA) enhances tissue ablation, minimizing thermal injury and improving clinical outcomes.
Area of Science:
- Biomedical Engineering
- Surgical Technology
- Laser Medicine
Background:
- Optimal fiber manipulation is critical for laser prostatectomy outcomes.
- Understanding the interplay between fiber movement and tissue ablation is limited.
- This study quantitatively investigates optical fiber angular movement's effect on tissue ablation.
Purpose of the Study:
- To quantitatively assess the impact of optical fiber angular movement on tissue ablation performance.
- To determine the optimal sweeping angle (SA) for effective laser prostatectomy.
- To correlate fiber manipulation parameters with tissue ablation characteristics.
Main Methods:
- Utilized porcine kidney as an in vitro tissue model.
- Employed a 180W, 532nm surgical laser with 750µm side-firing fibers.
- Assessed parameters like irradiance, overlapping pulses (OP), and beam path length (BPL) at various sweeping angles (0°-120°).
Main Results:
- Ablation depth was maximal (<30° SA) and decreased at higher angles.
- Optimal results (minimal denaturation, VAD) observed at 15°-30° SA.
- Increasing SA reduced irradiance and OP, impacting ablation; 0° SA caused excessive denaturation.
Conclusions:
- A sweeping angle (SA) of 30° is optimal for effective tissue ablation in laser prostatectomy.
- Inefficient ablation from suboptimal SA can cause peripheral thermal injury.
- Further clinical studies are needed to validate these findings.
