♦ 1. History and Development

In 1962, Robert Hall’s team at General Electric Company in the United States first invented the gallium arsenide laser. Fifty years later, semiconductor lasers have undergone rapid development and found applications in numerous industries. The earliest application of semiconductor lasers in the medical field can also be traced back to the 1960s. However, at that time, the lasers had low power, poor stability, and relatively single wavelength, basically remaining in the laboratory research stage. Nowadays, various wavelengths of medical semiconductor lasers are emerging endlessly. What this article is about is the past and present of the 1470nm semiconductor laser.

 

♦ 2. Operating Principle

1470nm lasers typically utilize InGaAsP (indium gallium arsenide phosphide) semiconductor materials and are excited through electrical injection. As we all know, water accounts for approximately 70% of the total weight of cells, and water has three characteristic peaks in its near-infrared absorption spectrum, located at 1450nm, 1940nm, and 1200nm, with 1450nm being its strongest absorption peak. This means that 1470nm lasers have an extremely suitable medical application prospect. Currently, 1470nm lasers are mainly used in four major fields: urology, otolaryngology, vascular treatment, and intervertebral disc protrusion treatment. Today, we will mainly discuss its application and cases in urology.

♦ 3. Application Examples in Urology

The following three examples, namely the treatment of benign prostatic hyperplasia (BPH), en bloc resection of bladder tumors, and minimally invasive treatment of parapelvic cysts, all demonstrate the significant advantages of the 1470nm laser in the medical field.

 

（1）Treatment of Benign Prostatic Hyperplasia (BPH)

In 2019, a 75-year-old patient with benign prostatic hyperplasia (BPH) in Northeast China underwent a 1470nm laser prostatectomy. He was able to get up and walk the day after the surgery and regained spontaneous urination within a week, without complications such as urinary incontinence. Due to its six major advantages, including minimal bleeding, short recovery time, fewer surgical complications, shorter postoperative catheterization time, rapid recovery, and quick discharge, the 1470nm infrared laser surgery has gradually replaced traditional plasma electrosection.

（2）En Bloc Resection of Bladder Tumor

In 2023, a 70-year-old patient from South China underwent a 1470nm laser en bloc resection for multiple bladder tumors. The intraoperative blood loss was less than 2ml, and the tumor was completely resected without complications such as obturator nerve reflex. The 1470nm laser system has gained favor among physicians and patients due to its advantages of minimal trauma, less bleeding, and ease of operation.

（3）Minimally Invasive Treatment of Parapelvic Cysts

According to a medical journal, a hospital in East China has compiled statistics on 30 patients who underwent diagnosis and treatment using this technique. The operation lasted only 38.5 minutes, and patients were hospitalized for 3 days post-operation. The symptom relief rate reached 96.67%, with no recurrences. Compared to the control group of 31 patients who underwent laparoscopic parapelvic cyst unroofing and decompression, this treatment regimen is more significant and possesses advantages such as minimally invasive, safe, and fast recovery, making it worthy of clinical promotion.

 

♦ 4. Summary of Technical Advantages

Based on the above cases, the clinical application characteristics of 1470nm laser mainly include three aspects: minimal bleeding, rapid recovery, and wide range of indications. These three major advantages are pushing 1470nm laser technology into a broader space and developing it into an important choice for minimally invasive surgery in urology.

 

♦ Since its establishment in 2011, Beijing RealLight Technology Co.,Ltd. has been dedicated to the research, development, production, and sales of semiconductor lasers. Our engineering and technical team has painstakingly crafted the 1470nm laser module, which boasts a compact structure and a maximum single-tube power of up to 15W. It achieves coupled output through standard optical fibers and offers an excellent cost-performance ratio. Furthermore, we can provide semiconductor laser modules in various wavelengths and packaging formats, as well as comprehensive solutions, to cater to your diverse needs.

We aspire to become your partner, leveraging laser technology to create value for you!

 

 

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