Split tip dialysis catheter
First Claim
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1. A multi-lumen catheter, comprising:
- an outer tube comprising a body portion having a first lumen adapted for fluid flow therethrough, a tip portion having a second lumen adapted for fluid flow therethrough in fluid communication with said first lumen, and a port positioned proximal said tip portion, wherein a cross-sectional area of said tip portion is smaller than a cross-sectional area of said body portion, and wherein a cross-sectional area of said second lumen is smaller than a cross-sectional area of at least a distal end portion of said first lumen; and
an inner tube having a third lumen adapted for fluid flow therethrough, said inner tube being positioned within said outer tube and having a distal end that is configured to pass through said port generally parallel to said outer tube and that is adapted to be variably distanced from said port.
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Abstract
A split tip dialysis catheter having an outer tube and an inner tube, the two tubes which can be arranged over at least a portion of their length in a coaxial configuration. The inner tube may be connected to the outer tube at a proximal bifurcation, secured at a distal end of the outer tube or both, but generally the inner tube will remain free to move relative to the outer tube to optimize functionality. In addition, the inner tube can be arranged to be removable from the catheter for replacement thereof.
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Citations
41 Claims
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1. A multi-lumen catheter, comprising:
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an outer tube comprising a body portion having a first lumen adapted for fluid flow therethrough, a tip portion having a second lumen adapted for fluid flow therethrough in fluid communication with said first lumen, and a port positioned proximal said tip portion, wherein a cross-sectional area of said tip portion is smaller than a cross-sectional area of said body portion, and wherein a cross-sectional area of said second lumen is smaller than a cross-sectional area of at least a distal end portion of said first lumen; and an inner tube having a third lumen adapted for fluid flow therethrough, said inner tube being positioned within said outer tube and having a distal end that is configured to pass through said port generally parallel to said outer tube and that is adapted to be variably distanced from said port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41)
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Specification