Double-lumen catheter
First Claim
1. A catheter comprising:
- a shaft segment, said shaft segment including a proximal end of the catheter and a shaft segment central axis, wherein said shaft segment comprises a shaft segment uptake lumen and a shaft segment return lumen;
a distal end segment coupled to the shaft segment, said distal end segment including a distal end of the catheter and a distal end segment central axis, wherein said distal end segment comprises a distal end segment uptake lumen and a distal end segment return lumen, further wherein said distal end segment uptake and return lumens are coupled to said shaft segment uptake and return lumens, respectively;
wherein said distal end segment central axis forms a non-zero angle with the shaft segment central axis when said catheter is in its unstressed configuration.
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Accused Products
Abstract
A catheter is described. In one embodiment, the catheter includes: a shaft segment including a shaft segment uptake lumen and a shaft segment return lumen; and a distal end segment coupled to the shaft segment, the distal end segment including a distal end segment uptake lumen and a distal end segment return lumen, where the distal end segment central axis forms a non-zero angle with the shaft segment central axis when the catheter is in its unstressed configuration. In a second embodiment, the catheter includes: a shaft segment; and a distal end segment coupled to the shaft segment; where the uptake lumen distal end is terminated by a closed surface, further where the uptake lumen distal segment includes only one side hole. In a third embodiment, the catheter includes: an uptake lumen; and a return lumen; where at least a portion of the return lumen distal segment is helically coiled around the uptake lumen distal end.
114 Citations
28 Claims
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1. A catheter comprising:
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a shaft segment, said shaft segment including a proximal end of the catheter and a shaft segment central axis, wherein said shaft segment comprises a shaft segment uptake lumen and a shaft segment return lumen;
a distal end segment coupled to the shaft segment, said distal end segment including a distal end of the catheter and a distal end segment central axis, wherein said distal end segment comprises a distal end segment uptake lumen and a distal end segment return lumen, further wherein said distal end segment uptake and return lumens are coupled to said shaft segment uptake and return lumens, respectively;
wherein said distal end segment central axis forms a non-zero angle with the shaft segment central axis when said catheter is in its unstressed configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A catheter comprising:
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a shaft segment, said shaft segment including a proximal end of the catheter and a shaft segment central axis;
a distal end segment coupled to the shaft segment, said distal end segment including a distal end of the catheter and a distal end segment central axis;
wherein said distal end segment central axis is parallel to the shaft segment central axis when said catheter is in its unstressed configuration, further wherein said distal end segment comprises a return lumen and an uptake lumen having a return lumen distal end and an uptake lumen distal end, respectively, further wherein the uptake lumen distal end is terminated by a closed surface, further wherein the uptake lumen distal segment includes only one side hole. - View Dependent Claims (18, 19, 20, 21, 22)
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23. A catheter comprising:
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an uptake lumen including an uptake lumen shaft segment and an uptake lumen distal segment with an uptake lumen distal end;
a return lumen including a return lumen shaft segment and a return lumen distal segment with a return lumen distal end;
wherein the uptake lumen shaft segment is substantially parallel to the return lumen shaft segment, further wherein at least a portion of the return lumen distal segment is helically coiled around the uptake lumen distal end. - View Dependent Claims (24, 25, 26, 27, 28)
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Specification