Drainage balloon catheter system
First Claim
1. In an intraurethral retention catheter having a longitudinal axis and being adapted for use in a bladder and having an expansion balloon for selectively maintaining the catheter after insertion within the bladder and at least one drainage aperture providing flow communication between an interior bore of the catheter and the bladder after insertion within the bladder;
- the improvement comprising;
(a) expandable balloon biasing means including at least a first portion thereof radially extending and spaced outwardly and circumferentially from said catheter; and
(b) said aperture being positioned on said catheter such that a plane normal to said catheter longitudinal axis and passing through said aperture also passes generally through said balloon biasing means;
said balloon biasing means first portion being spaced radially outward from said aperture;
whereby said aperture is adapted to freely communicate with urine within said bladder when said balloon biasing means is expanded and whereby said balloon biasing means is adapted to positively urge walls of the bladder away from the aperture when expanded within the bladder such that the walls do not occlude flow of urine from the bladder through the aperture.
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Accused Products
Abstract
A catheterization apparatus is provided having a catheter, a drainage hose, and a collection vessel. The catheter is of the endwelling type having a retention balloon for expansion while the head of the catheter is in the bladder or other cavity being drained thereby. The balloon when expanded comprises a plurality of wings or loops which function in cooperation with at least one aperture which communicates the interior bore or lumen of the catheter with the bladder such that the bladder cannot collapse about and occlude the aperture. In this manner, substantially little or no residual urine remains in the bladder during catheterization thereof, thus reducing significantly growth of bacteria within the bladder which would tend to cause a urinary tract infection. The catheter, hose, and vessel normally form a sealed system which is preferably only broken every 24 hours. The vessel is sized so as to accept at least a 24 hour output of urine and is preferably nonreusable. In particular, the vessel has a constricted neck which allows urine to slowly flow thereinto over a period of time but which restricts quick and easy emptying of the vessel for reuse. A hanger is also provided for the vessel which allows the vessel to be easily secured to a bed or a wheelchair.
98 Citations
16 Claims
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1. In an intraurethral retention catheter having a longitudinal axis and being adapted for use in a bladder and having an expansion balloon for selectively maintaining the catheter after insertion within the bladder and at least one drainage aperture providing flow communication between an interior bore of the catheter and the bladder after insertion within the bladder;
- the improvement comprising;
(a) expandable balloon biasing means including at least a first portion thereof radially extending and spaced outwardly and circumferentially from said catheter; and (b) said aperture being positioned on said catheter such that a plane normal to said catheter longitudinal axis and passing through said aperture also passes generally through said balloon biasing means;
said balloon biasing means first portion being spaced radially outward from said aperture;
whereby said aperture is adapted to freely communicate with urine within said bladder when said balloon biasing means is expanded and whereby said balloon biasing means is adapted to positively urge walls of the bladder away from the aperture when expanded within the bladder such that the walls do not occlude flow of urine from the bladder through the aperture. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
- the improvement comprising;
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16. In a retention catheter with a longitudinal axis adapted for use in a bladder and having an expansion balloon for selectively maintaining the catheter after insertion within the bladder and at least one drainage aperture providing flow communication between the interior bore of the catheter and the bladder;
- the improvement comprising;
(a) expandable balloon biasing means spaced from said catheter in a plane normal to the catheter longitudinal axis and positioned circumferentially thereabout;
said balloon biasing means for positively urging walls of the bladder away from the aperture such that the walls do not occlude flow of urine from the bladder through the aperture, said biasing means comprising said expansion balloon;
said expansion balloon having an arcuate configuration with an inner and outer surface;
said outer surface adapted for engaging the bladder walls; and
said aperture opening into the bladder but in radially spaced relationship from said inner surface such that substantially all residual urine in the bladder can freely flow into the catheter by means of said aperture;
wherein;(b) said expansion balloon is attached to a lumen containing shaft of the catheter and has a plurality of loops; (c) each of said loops has a drainage aperture associated therewith; and (d) said expansion balloon includes an outer donut shaped ring and a plurality of angularly spaced radially extending spokes attached at one end thereof to the shaft of the catheter and at the opposite end thereof to said ring for supporting said ring;
adjacent spokes define said loops in conjunction with an associated portion of said ring therebetween.
- the improvement comprising;
Specification