Dialysis catheter
First Claim
1. A dialysis catheter comprising a first portion having a first diameter, an elongated distal portion having a second diameter smaller than the first diameter, and a transition portion between the first portion and distal portion, the first portion including first and second independent longitudinally extending blood withdrawal lumens extending in the first portion, the transition portion having first and second opened areas separated by a rib, the first opened area forming a first terminal opening for the first withdrawal lumen and the second opened area forming a second terminal opening for the second withdrawal lumen such that the first and second lumens terminate in longitudinal openings, the first and second opened areas being radially spaced and axially adjacent, and a longitudinally extending blood delivery lumen configured to deliver blood, the delivery lumen extending in the first portion and terminating in a delivery opening in the distal portion of the catheter, the first and second opened areas positioned proximally of the delivery opening.
14 Assignments
0 Petitions
Accused Products
Abstract
A dialysis catheter having a first portion having a first diameter, an elongated distal portion having a second diameter smaller than the first diameter, and a transition portion between the first portion and distal portion. The first portion includes first and second independent longitudinally extending blood withdrawal lumens and the transition portion has first and second opened areas separated by a rib, the first opened area forming a first terminal opening for the first withdrawal lumen and the second opened area forming a second terminal opening for the second withdrawal lumen. A longitudinally extending blood delivery lumen configured to deliver blood terminates in a delivery opening in the distal portion of the catheter.
247 Citations
19 Claims
- 1. A dialysis catheter comprising a first portion having a first diameter, an elongated distal portion having a second diameter smaller than the first diameter, and a transition portion between the first portion and distal portion, the first portion including first and second independent longitudinally extending blood withdrawal lumens extending in the first portion, the transition portion having first and second opened areas separated by a rib, the first opened area forming a first terminal opening for the first withdrawal lumen and the second opened area forming a second terminal opening for the second withdrawal lumen such that the first and second lumens terminate in longitudinal openings, the first and second opened areas being radially spaced and axially adjacent, and a longitudinally extending blood delivery lumen configured to deliver blood, the delivery lumen extending in the first portion and terminating in a delivery opening in the distal portion of the catheter, the first and second opened areas positioned proximally of the delivery opening.
- 17. A dialysis catheter comprising a first portion having a first diameter, an elongated distal portion having a second diameter smaller than the first diameter, and a transition portion between the first portion and distal portion, the first portion including first and second independent blood withdrawal lumens extending in the first portion, the first withdrawal lumen terminating in the transition portion in a first terminal opening and the second withdrawal lumen terminating in a second terminal opening, the first and second terminal openings being radially spaced and axially adjacent, and a substantially circular longitudinally extending blood delivery lumen configured to deliver blood, the delivery lumen extending in the first portion and terminating in a delivery opening in the distal portion of the catheter, the first and second terminal openings positioned proximally of the delivery opening, each of the withdrawal lumens having a first outer curved wall and a second inner curved wall, the inner curved wall being closer to the delivery lumen than the outer curved wall and having a length less than a length of the outer curved wall.
Specification