English to Russian Medical Medical: Instruments

Instruction for use:
1.Select the correct stylet size for the ET tube to be used.
...

Introduce the device into the prepared endotracheal tube using standard medical practices.
Ensure the device tip does not protrude from a Murphy eye or beyond the patient end of the tube.
If such practice is not followed, tracheal or laryngeal damage may occur.
5.
Shape the device with the threaded endotracheal tube that will assist intubation.

Не совсем понимаю "shape" в данном контексте.

Спасибою