Graduated urethral tubes (Sushruta Samhita)
- Period
- As described in the Sushruta Samhita (text of disputed date)
- In the film
- First appears 7:16 in the film, II. The King's Permission
For a narrowed urinary outlet the text prescribes a tube open at both ends, made of iron, wood or shellac. The tube is smeared with clarified butter and introduced gently into the urethra. Every third day it is replaced by a thicker one, so the passage is widened in stages rather than at one sitting. This is graduated dilation, the principle of the later bougie. The same page gives a cutting alternative, an incision on the underside of the penis that spares the perineal raphe; which condition that passage treats is not settled in the sources read.