Abstract A catheter having two bores in a main flexible tube. The first bore is for drainage of waste matter from the bladder and two apertures are provided, one adjacent the leading end of the catheter, the second being spaced from the first towards the following end of the catheter. Each of the apertures allows waste matter to drain from the bladder through the first bore. A thin tubular membrane is provided around the main tube of the catheter substantially in the region between the first and second apertures. The second bore communicates with the space between the membrane and the main tube via a further aperture in the main tube. Distilled water or the like may be introduced to this space through the second bore to expand the membrane so that the leading end of the catheter containing the two drainage apertures may be held in the bladder during use. Part of the thin tubular membrane is so arranged around the tube adjacent the second drainage aperture that a port is formed when the membrane is expanded whereby waste matter in the bladder in the vicinity of the junction of the bladder with the urethra may drain through the second aperture.
Catheter means comprising an extended flexible tube, said tube housing first and second longitudinal bore means, said first bore means extending for substantially the entire length of the catheter and terminating adjacent the leading end of the tube; first and second aperture means in the tube communicating with said first bore means; said first aperture means being located adjacent the leading end of said tube and said second aperture means being spaced from said first aperture means towards the following end of said tube; thin tubular membrane means positioned around said tube substantially in the region of the tube between said first and said second aperture means and being affixed to an entirely surrounding said tube so that a junction between said membrane and said tube is not above said second aperture means except in the immediate area thereof where said junction is above said second aperture means; said second bore means extending substantially throughout the length of said catheter; further aperture means in said tube interconnecting said second bore means and the space between said tube and said thin tubular membrane means; and port means, through which waste matter may pass from a bladder into which that part of the catheter containing said first and said second aperture means is inserted through said second aperture means and into said first bore means, said port means positioned within the area around said second aperture at the said junctions of the membrane and tube and being formed in said thin tubular membrane means when the space between said thin tubular membrane means and said flexible tube is ballooned by the introduction of fluid into said space.
Claim 2
Dependent Claim
275 words
Catheter means comprising an extended flexible tube, said tube housing first and second longitudinal bore means, said first bore means extending for substantially the entire length of the catheter and terminating adjacent the leading end of the tube; first and second aperture means in the tube communicating with said first bore means; said first aperture means being located adjacent the leading end of said tube and said second aperture means being spaced from said first aperture means towards the following end of said tube; thin tubular membrane means positioned around said tube substantially in the region of the tube between said first and said second aperture means and being affixed to an entirely surrounding said tube so that a junction between said membrane and said tube is not above said second aperture means except in the immediate area thereof where said junction is above said second aperture means; said second bore means extending substantially throughout the length of said catheter; further aperture means in said tube interconnecting said second bore means and the space between said tube and said thin tubular membrane means; and port means, through which waste matter may pass from a bladder into which that part of the catheter containing said first and said second aperture means is inserted through said second aperture means and into said first bore means, said port means positioned within the area around said second aperture at the said junctions of the membrane and tube and being formed in said thin tubular membrane means when the space between said thin tubular membrane means and said flexible tube is ballooned by the introduction of fluid into said space.
Claim 3
Dependent Claim
22 words
Catheter means as in claim 1 wherein a non-return valve is provided in the flexible tube between the second and first apertures.