Aortic catheter with flow divider and methods for preventing cerebral embolization
First Claim
1. A fluid flow divider for dividing fluid flow within a body lumen of a patient into at least two channels, the fluid flow divider comprising a first end and a second end, a top surface and a bottom surface, and the flow divider having an undeployed state wherein the flow divider is collapsed to a small diameter and a deployed state wherein the flow divider is expanded to divide fluid flow through the body lumen into a first flow channel and at second flow channel, wherein the expanded flow divider is impermeable to blood and to emboli.
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Accused Products
Abstract
The invention is a catheter with a fluid flow divider positioned near the distal end of the catheter for dividing a first lumen into two channels at a point where a second lumen branches from the first lumen, and for selectively perfusing the branch lumen. The invention is particularly suited for use in the aortic arch. The fluid flow divider may comprise one or more inflatable chambers or one or more deployable shrouds comprising a plurality of arms with a webbing extending between adjacent arms. The inflatable chambers may be relatively noncompliant or they may be compliant, exhibiting elastic behavior after initial inflation, to closely fit the aortic lumen size and curvature. The catheter may further include one or more additional or auxiliary flow control members located upstream or downstream from the fluid flop divider to further segment the patient'"'"'s circulatory system for selective perfusion to different organ systems within the body or to assist in anchoring the catheter in a desired position.
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Citations
50 Claims
- 1. A fluid flow divider for dividing fluid flow within a body lumen of a patient into at least two channels, the fluid flow divider comprising a first end and a second end, a top surface and a bottom surface, and the flow divider having an undeployed state wherein the flow divider is collapsed to a small diameter and a deployed state wherein the flow divider is expanded to divide fluid flow through the body lumen into a first flow channel and at second flow channel, wherein the expanded flow divider is impermeable to blood and to emboli.
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45. Apparatus for dividing blood flow within a patient'"'"'s aortic arch to isolate the patient'"'"'s aortic arch vessels from a main flow channel within the patient'"'"'s aortic lumen, comprising:
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an elongated catheter shaft; and
a fluid flow divider mounted on the elongated catheter shaft, the fluid flow divider having a first end and a second end, a top surface and a bottom surface, the flow divider having a deployed state and an undeployed state, wherein, when in the undeployed state, the fluid flow divider is collapsed to a small diameter, and when in the deployed state, the flow divider is expanded to divide blood flow within the patient'"'"'s aortic arch thereby isolating the patient'"'"'s aortic arch vessels from the main flow channel within the patient'"'"'s aortic lumen, wherein the expanded fluid flow divider is impermeable to blood and to emboli. - View Dependent Claims (46, 47, 48, 49, 50)
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Specification