Importance

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Abstract

An elongated, hollow filiform having a tapered insertion tip is passed through the urethra to the urinary bladder and functions both as a probe to seek the lumen or opening of the urethra and as a guide so that a rigid, hollow stylet within a Councill catheter or the like can be slidably passed over the filiform into the bladder while the filiform remains in a stationary position within the urethra and the bladder. The stylet and the filiform can then be removed to leave the catheter within the bladder. If the urethra is constricted, a first elongated, hollow dilator can be guided over the filiform to dilate or widen the urethra before the stylet and catheter are introduced. If necessary, the first dilator can be replaced by a second dilator having a larger outer diameter to further dilate the urethra so that the diameter of the urethra will accommodate the Councill catheter containing the hollow rigid stylet.

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First Claim