PROBES AND DILATORS
What are the features and uses of probes and dilators?
Probes are used to gain entry through small openings to get information about their depth, direction and size; they are usually blunt ended.
Dilators are used to investigate the patency and dilate hollow tubular passages.
Infection, trauma and surgical accidents can result in healing by second intention in hollow organs; this results in strictures.
Dilators are usually made of metal or gum elastic.
Agreed gauge has been utilized to ensure uniform size in all the sets.
This also helps the surgeon to choose the correct size-dilator.
As dilatations are done gradually over a period of time, the surgeon records the degree of dilation achieved, so as to start at the next level on the subsequent attendance or corticosteroids can also be used to minimize oedema and fibrosis.
The dilators in common use are as follows:
· Lister
· Clutton
· Turner-Warwick
· Filiform (Canny-Ryall) bougie
· Jackson oesophageal bougie
· Neoplex
· Bake’s bile duct
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