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Balloon-free urinary catheter

  • US 20040049170A1
  • Filed: 06/27/2003
  • Published: 03/11/2004
  • Est. Priority Date: 08/03/2000
  • Status: Abandoned Application
First Claim
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19. A balloon-free urinary catheter including a tubular retention section (15A) which, in use, locates in the neck of a patient'"'"'s bladder, and a tubular drainage section (15B) which, in use, is received in the patient'"'"'s urethra, the retention section having a diameter which is normally greater than the neck of the bladder but being stretchable on the application of an axial force thereto to reduce its diameter to less than that of the urethra to allow the catheter to travel therethrough until the retention section is positioned inside the bladder, the retention section (15A) being constructed so that it will expand and return to its original size on release of the axial force whereby it locates in the neck of the bladder and engages therewith to form a seal, wherein the improvement comprises:

  • the retention section (15A) and the drainage section (15B) being both made of a braided material comprising structural filaments arranged at a braid angle so that, when the axial force is applied to the catheter, the retention section (15A) and the drainage section (15B) decrease in diameter and increase once the axial force is removed or reversed.

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