A Frazier fine cannula (normal) No. 4 is a surgical instrument used for fine suctioning in delicate areas to remove fluids and debris. The "No. 4" indicates its size, and it is employed in procedures like neurosurgery, ENT (ear, nose, and throat) surgeries, and other open surgical procedures where a thin, precise instrument is needed to maintain a clear surgical field and avoid damaging fine tissues.

Neurosurgery:

Used for suctioning cerebrospinal fluid, blood, and bone fragments during procedures on the brain and spinal cord.

ENT Surgery:

Employed for suctioning in the nasal cavity, sinuses, and oral cavity during procedures like rhinoplasty or other oral and ENT surgeries.

General and Fine Surgical Procedures:

Used to clear blood, irrigation fluids, and other debris from confined surgical sites where a fine, delicate touch is required.

Postoperative Care:

Helps to drain residual fluids and prevent hematoma formation after surgery.