Describe the term "clinical trial".

The term "clinical trial" refers specifically to a research study designed to evaluate the effectiveness, safety, and usability of a medical device or treatment among patients. This process involves carefully monitored testing phases where participants are presented with the medical device under investigation to assess how well it performs compared to existing standards or controls.

In a clinical trial, data is collected on various outcomes, including any adverse effects, the benefits to the patient, and overall usability, which goes directly into determining whether the medical device can be approved for market use. The process is vital for ensuring that devices not only meet safety standards but also effectively address the medical needs they are intended to.

Gathering consumer opinions, regulatory requirements, or reviewing pre-existing data on similar devices does not encompass the comprehensive and controlled environment of a clinical trial designed to produce new evidence on the specific device's performance in a real-world patient setting.