Trocars and biopsy needles are essential medical instruments used in various surgical procedures and diagnostic interventions. Trocars are sharp-pointed surgical devices equipped with a cannula, often used in minimally invasive surgeries to create access ports for other instruments like laparoscopes. Biopsy needles, on the other hand, are specialized tools designed to extract tissue samples from the body for diagnostic purposes, typically in procedures such as biopsies. Both trocars and biopsy needles play critical roles in modern medical practice, aiding in accurate diagnosis and treatment across a wide range of medical specialties.