CER Endoscope Design and Structure Questions and Answers 2

Question 1

Which component of a flexible endoscope houses the light guide bundles and image fiber bundle?

Accepted Answer

Umbilical cord/light guide tube

Answer

Biopsy port cap

Answer

Suction valve

Answer

Distal tip

Question 2

What is the function of the air/water channel in a flexible endoscope?

Accepted Answer

To insufflate air into the lumen and flush the lens with water for visualization

Answer

To aspirate fluid and tissue samples from the patient

Answer

To deliver medications to the patient

Answer

To circulate coolant to the light source

Question 3

In a video endoscope, how is the image transmitted from the distal tip to the processor?

Accepted Answer

Via a charge-coupled device (CCD) or CMOS sensor and electrical cable

Answer

Via glass fiber bundles

Answer

Via a mirror system in the insertion tube

Answer

Via infrared wireless transmission

Question 4

What is the purpose of the elevator channel found in duodenoscopes?

Accepted Answer

To direct accessories emerging from the instrument channel toward the ampulla of Vater

Answer

To elevate the patient's head during procedures

Answer

To flush the biopsy channel

Answer

To control air insufflation

Question 5

Which material forms the flexible outer sheath (insertion tube covering) of most modern endoscopes?

Accepted Answer

Polyurethane or similar polymer blend

Answer

Latex rubber

Answer

Stainless steel mesh

Answer

Silicone only

Question 6

What is the 'working length' of an endoscope?

Accepted Answer

The length of the insertion tube from the control body junction to the distal tip

Answer

The total length of the instrument including the control body

Answer

The diameter of the biopsy channel

Answer

The length of the umbilical cord