Valved hemodialysis catheter
First Claim
1. A medical catheter assembly comprising:
- an elongated catheter member defining a longitudinal axis and at least one lumen for passage of fluid, the elongated catheter member having proximal and distal end regions, the distal end region having an open end; and
a valve disposed adjacent the distal end region of the catheter member and, in response to a predetermined pressure level within the at least one lumen when the open end is at least partially occluded, a portion of the valve is movable in a distal direction to permit flow of the fluid through the valve and into the at least one lumen.
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Accused Products
Abstract
A dialysis catheter includes an elongate catheter member having an outer wall member defining proximal and distal end regions, and first and second longitudinal lumens. The outer member includes first and second ports in respective fluid communication with the first and second longitudinal lumens. The first opening and the first lumen define an inflow passage. The second opening and the second longitudinal lumen define an outflow passage. A valve is disposed relative to the outer member proximal of the first port. The valve is adapted to move from a closed position to an open position in response to a predetermined vacuum pressure level realized within the first longitudinal lumen to permit flow of blood through the valve and into the first longitudinal lumen. The valve may be adapted to move to the open position in the event of a luminal occlusion.
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Citations
21 Claims
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1. A medical catheter assembly comprising:
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an elongated catheter member defining a longitudinal axis and at least one lumen for passage of fluid, the elongated catheter member having proximal and distal end regions, the distal end region having an open end; and a valve disposed adjacent the distal end region of the catheter member and, in response to a predetermined pressure level within the at least one lumen when the open end is at least partially occluded, a portion of the valve is movable in a distal direction to permit flow of the fluid through the valve and into the at least one lumen. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A medical catheter assembly comprising:
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an elongated catheter member comprising an outer catheter wall and defining a lumen, a distal end region of the catheter member having an open end; and a valve member pivotally connected to the outer catheter wall, wherein the valve member is configured to, in response to a predetermined pressure level within the lumen when the open end is at least partially occluded, move in a distal direction to define an opening in the outer catheter wall to permit flow of fluid through the opening and into the lumen. - View Dependent Claims (16, 17, 18, 19, 20, 21)
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Specification