Bidirectional check valve catheter
First Claim
1. A valved catheter comprising(a) an elongated, flexible tubular element extending along a central axis and having a proximal end and a distal end, and adapted for flow of fluid between said proximal and said distal end, and(b) a valve assembly coupled to the interior of the tubular element, said assembly generally defining a nominal control plane which intersects said central axis at an oblique angle, said assembly having a flow portion nominally disposed to lie in said control plane whereby said assembly establishes a fluid seal across the interior of said tubular element at said control plane, said flow portion including a flexible vane having its periphery affixed at least in part to the interior of said tubular element and positioned between said intersection of said control plane with said central axis and said distal end and adapted to be deflected out of said control plane toward said distal end only in response to the establishment of a relatively high fluid pressure at said proximal end and a relatively low fluid pressure at said distal end.
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Accused Products
Abstract
A valved catheter is disclosed having an elongated, flexible tubular element extending along a central axis and a flow portion of a valve assembly which controls fluid flow in the tubular element. The element is adaptable for bidirectional flow of fluid between its proximal and its distal ends, with a bidirectional valve assembly coupled to the interior of the tubular element. The bidirectional assembly generally defines a control plane which intersects the central axis at an oblique angle. The assembly has an inflow portion and an outflow portion nominally disposed to lie in the control plane. The inflow portion includes an inflow vane positioned between the intersection of the control plane with the central axis and the distal end and which is adapted to be deflected out of the control plane toward the distal end in response to the establishment of a relatively high fluid pressure at the proximal end and a relatively lower fluid pressure at the distal end. The outflow portion also includes an outflow vane positioned between the intersection of the central plane with the central axis and the proximal end and which is adapted to be deflected out of the control plane toward the proximal end in response to the establishment of a relatively low fluid pressure at the proximal end and a relatively higher fluid pressure at the distal end.
173 Citations
43 Claims
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1. A valved catheter comprising
(a) an elongated, flexible tubular element extending along a central axis and having a proximal end and a distal end, and adapted for flow of fluid between said proximal and said distal end, and (b) a valve assembly coupled to the interior of the tubular element, said assembly generally defining a nominal control plane which intersects said central axis at an oblique angle, said assembly having a flow portion nominally disposed to lie in said control plane whereby said assembly establishes a fluid seal across the interior of said tubular element at said control plane, said flow portion including a flexible vane having its periphery affixed at least in part to the interior of said tubular element and positioned between said intersection of said control plane with said central axis and said distal end and adapted to be deflected out of said control plane toward said distal end only in response to the establishment of a relatively high fluid pressure at said proximal end and a relatively low fluid pressure at said distal end.
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32. A valved catheter comprising
(a) an elongated, flexible tubular element extending along a central axis and having a proximal end and a distal end, and adapted for flow of fluid between said proximal and said distal end, and (b) a valve assembly coupled to the interior of the tubular element, said assembly generally defining a nominal control plane which intersects said central axis at an oblique angle, said assembly having a flow portion nominally disposed to lie in said control plane whereby said assembly establishes a fluid seal across the interior of said tubular element at said control plane, said flow portion including a flexible vane having its periphery affixed at least in part to the interior of said tubular element and positioned between said intersection of said control plane with said central axis and said proximal end and adapted to be deflected out of said control plane toward said proximal end only in response to the establishment of a relatively high fluid pressure at said distal end and a relatively low fluid pressure at said proximal end.
Specification