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US 9,867,926 B2Granted
Dialysis catheter
AssigneeArgon Medical Devices, Inc.
InventorsStephan A. DeFonzo, John D. Leedle
Life of this patent
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AssigneeArgon Medical Devices, Inc.
InventorsStephan A. DeFonzo, John D. Leedle
Estimating the term…
A dialysis catheter including a first portion having a first diameter, an elongated distal portion having a second smaller diameter, and a transition portion The first portion includes 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. A longitudinally extending blood delivery lumen extends in the first portion and terminates in a delivery opening in the distal portion of the catheter, the first and second terminal openings positioned proximally of the delivery opening and each of the first and second terminal openings having a curved wall surrounding a portion of the terminal opening.
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 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 first and second terminal openings having a curved wall surrounding a portion of the terminal opening.
A dialysis catheter comprising a first portion having a first diameter, an elongated distal portion having a second diameter smaller than the first diameter, a first blood withdrawal lumen extending in the first portion, the first withdrawal lumen having a first opening, 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 spaced axially distally from the first opening of the withdrawal lumen and positioned in the distal portion of the catheter, the withdrawal lumen radially spaced from the delivery lumen, and a spacer positioned between the first opening and the delivery opening such that the delivery opening is positioned distal of the spacer and the first opening is positioned proximal of the spacer, the spacer forming a raised surface between the first opening and the delivery opening, wherein a transverse dimension of the catheter at the region of the spacer exceeds a transverse dimension of the catheter at the region at the delivery opening.
Dependencies are inferred from the claim text.