Certified Instrument Specialist (CIS) Practice Exam 2026 - Free CIS Practice Questions and Study Guide

The unique feature of the Frazier suction device is its design, which allows it to be particularly effective in confined spaces. This device is characterized by a narrow, elongated suction tip that provides precision, making it suitable for use in areas where space is limited, such as during surgical procedures. The specific shape and functionality enable the user to navigate around delicate tissues and access hard-to-reach areas without causing unnecessary trauma or disrupting the surgical field.

The other options, while describing possible characteristics of various suction devices, do not accurately reflect the defining feature of the Frazier suction. For instance, holding larger amounts of fluid is not a primary attribute that sets it apart from other devices; many suction systems can accommodate varying fluid capacities. Similarly, while the diameter may vary, the primary distinction of the Frazier suction is its design intended for confined applications, rather than being generically about diameter or fluid capacity. The mention of loudspeakers does not apply in this context, as suction devices do not typically incorporate such features.