Solid-body catheter including lateral distal openings
First Claim
1. A catheter for vascular insertion, comprising:
- a catheter body defining at least a first lumen and a second lumen, the catheter body including a distal region, the distal region including;
an atraumatic nose portion defining a first distal opening in fluid communication with the first lumen and a second distal opening in fluid communication with the second lumen;
a first lateral opening defined by the catheter body and in fluid communication with the first lumen, anda second lateral opening defined by the catheter body and in fluid communication with the second lumen,wherein at least one of the first and second lateral openings is defined by an angle cross-cut through an outer perimeter of the catheter body.
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Accused Products
Abstract
A split-tip catheter for placement within the vasculature of a patient and for use in hemodialysis or other suitable procedures is disclosed. In one embodiment, the split-tip catheter includes a catheter body that defines a first lumen and a second lumen. The catheter body further comprises a split distal region, including a venous segment and an arterial segment. The venous segment includes a recess extending proximally of a nose portion; and a lateral opening in fluid communication with the first lumen. The arterial segment also includes a lateral opening, is separate from the venous segment, and is removably seatable in the recess provided by the venous segment. In one embodiment, the distal region is un-split, but includes symmetrically opposed lateral openings, as well as distal openings, in communication with the first and second lumens for providing a functional stagger for blood flow in both forward and reverse catheter flow directions.
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Citations
20 Claims
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1. A catheter for vascular insertion, comprising:
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a catheter body defining at least a first lumen and a second lumen, the catheter body including a distal region, the distal region including; an atraumatic nose portion defining a first distal opening in fluid communication with the first lumen and a second distal opening in fluid communication with the second lumen; a first lateral opening defined by the catheter body and in fluid communication with the first lumen, and a second lateral opening defined by the catheter body and in fluid communication with the second lumen, wherein at least one of the first and second lateral openings is defined by an angle cross-cut through an outer perimeter of the catheter body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A catheter for vascular insertion, comprising:
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a catheter body defining at least a first lumen and a second lumen, the catheter body including a distal region, the distal region including; a circumferentially convergent nose portion defining a first distal opening in fluid communication with the first lumen and a second distal opening in fluid communication with the second lumen; a first lateral opening defined by the catheter body proximal to the nose portion and in fluid communication with the first lumen, and a second lateral opening defined by the catheter body proximal to the nose portion and in fluid communication with the second lumen, wherein the second lateral opening is substantially un-staggered longitudinally with respect to the first lateral opening, wherein the catheter is capable of a first staggered flow configuration wherein a majority of a first fluid portion exits the first lumen via the first distal opening and wherein simultaneously a majority of a second fluid portion enters the second lumen via the second lateral opening. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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19. A method for infusing and aspirating fluids with respect to a vessel of a patient via a catheter, the catheter including a catheter body defining a first lumen, a second lumen, and a distal region, the method comprising:
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infusing a first fluid portion into the vessel via both a first distal opening defined by a circumferentially convergent nose portion of the catheter body and in fluid communication with the first lumen and a first lateral opening defined by the catheter body proximal to the nose portion and in fluid communication with the first lumen such that a majority of the first fluid portion exits the first lumen via the first distal opening; and simultaneously aspirating a second fluid portion from the vessel via both a second distal opening defined by the nose portion and in fluid communication with the second lumen and a second lateral opening defined by the catheter body proximal to the nose portion and in fluid communication with the second lumen such that a majority of the second fluid portion enters the catheter via the second lateral opening to provide a first staggered flow configuration between the first fluid portion and the second fluid portion. - View Dependent Claims (20)
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Specification