Balloon-free urinary catheter
First Claim
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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Accused Products
Abstract
A balloon-free urinary catheter (15) comprising a tubular retention section (15A) shaped to locate 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 (15A) has a diameter which is normally greater than the neck of the bladder (2) but is stretchable on the application of an axial force thereto to reduce its diameter to less than that of the urethra (3). This allows the catheter to pass through the urethra until the retention section (15A) is positioned inside the bladder where it expands and returns to its original size on release of the axial force and locates in the neck of the bladder to form a seal therewith.
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Citations
37 Claims
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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. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A balloon-free urinary catheter comprising:
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a tubular retention section (15A) which, in use, locates in the neck of a patient'"'"'s bladder, 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 the diameter of the retention section 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; and
a tubular drainage section (15B) which, in use, is received in the patient'"'"'s urethra, wherein the retention section (15A) and the drainage section (15B) are both made of a braided material including 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 once the axial force is removed or reversed increase in diameter.
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Specification