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4A Screw Dilator

4A Screw Dilator

SKU: 4A-UR-0019

The Screw Dilator (Threaded Ureteral Dilator) is a unique endourological device featuring a continuous helical thread along its distal working end. By converting rotational torque into controlled forward axial motion, it allows urologists to advance through tough, fibrous urethral or ureteral strictures that resist direct axial pushing.

Available Sizes

6 Fr 8 Fr 10 Fr 12 Fr 14 Fr 16 Fr

Technical Specifications

Product NameScrew Dilator
Intended ApplicationAdvancement through tough fibrous urethral or ureteral strictures
MaterialRadiopaque Polypropylene / Nylon blend
Thread TypeHelical low-profile rounded threads
Guidewire ChannelFits 0.035 in guidewires
SterilizationEO Sterilized

Key Benefits

  • Rotational Mechanical Advantage: Screw-thread design navigates dense strictures using rotational force, reducing peak pushing resistance.
  • Controlled Advance Speed: Each turn advances the dilator by a precise millimeter distance, preventing sudden uncontrolled tissue tears.
  • High Structural Integrity: Rigid polymer body resists torsional twisting during rotation against tough scar tissue.
  • Atraumatic Thread Profile: Rounded, smooth thread edges displace tissue laterally without cutting or mucosal avulsion.
  • Central Wire Channel: Fits standard guidewires to ensure the dilator stays centered within the true lumen.

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