this kind of charger of Laser Pointer is very practical

After the receiver of  Laser Pointer  is plugged into the flash disk port on the computer. 
The optical system output spot diameter, the terminal output laser power requirements, software and control functions (if any), electrical safety requirements of the grounding impedance, leakage current, dielectric strength, the protection of the laser safety requirements, up to emission limits. The clinical requirements. Clinical Class 3A semiconductor laser treatment can be divided into two cases: one is, reporting companies to do clinical trials to verify the intended use of the product. Another is that the reporting companies in accordance with the requirements of the Medical Device Registration (State Board Order No. 16) to submit clinical trial data and comparison of similar products. One kind of battery of Laser Pointer has the diameter of 16mm and length of 34mm.
Clinical trial requirements. Institutions conducting clinical trials, clinical trial program and reporting requirements, the conduct of clinical trials: clinical trials of of 3A semiconductor laser treatment machine shall comply with the requirements of the Medical Device Clinical Trials Regulations (State Board Order No. 5). Institutions conducting clinical trials should be identified for the State Food and Drug Administration published pharmaceutical clinical trial base. Clinical trials program and reporting requirements. Program of clinical trials should be reasonable, science and meet the ethical requirements of clinical trials, the project should be able to reflect the use of the product characteristics and intended purpose, and product safety, practicality, reliability and effectiveness are closely related. The red laser beam  Laser Pointer  became the main trend in the daily and practical use.
Disease scenario diseases standard number of cases to determine the reasons should be sufficient, scientific; select the object (diagnosis to include, exclude, quit, etc.), the range should be clear; meet the evaluation requirements of the intended use of the product; clear study of the treatment. duration set in the control group, the clinical evaluation of the effectiveness indicators, evaluation criteria, evaluation methods, and statistical analysis methods. The clinical trial protocol should be approved by the Ethics Committee. The main content of the clinical study report and test program consistent with the requirements. In the main content should focus on to describe the design elements of the program include: program changes (if any), subjects and sample size, blinding methods, control type.  Program of clinical trials should be pre-established inclusion criteria or conditions, inclusion criteria should be clear diagnostic criteria, diagnostic criteria should be clinically recognized. Met the inclusion condition and willing to participate in clinical trials and informed consent is required to identify the requirements for the selected object, the selected object has a certain representation. Therefore, this kind of charger of Laser Pointer is very practical.