Catheter pump assembly including a stator
First Claim
1. A catheter pump assembly, comprising:
- a proximal portion;
a distal portion;
a catheter body having a lumen extending along a longitudinal axis between the proximal and distal portions;
an impeller disposed at the distal portion, the impeller including a blade with a trailing edge; and
a flow modifying structure disposed downstream of the impeller, the flow modifying structure having a plurality of blades having a leading edge substantially parallel to and in close proximity to the trailing edge of the blade of the impeller and an expanse extending downstream from the leading edge, the expanse having a first region with higher curvature and a second region with lower curvature, the first region being between the leading edge and the second region;
wherein the flow modifying structure is collapsible from a deployed configuration to a collapsed configuration.
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Accused Products
Abstract
A catheter pump assembly is provided that includes a proximal a distal portion, a catheter body, an impeller, and a flow modifying structure. The catheter body has a lumen that extends along a longitudinal axis between the proximal and distal portions. The impeller is disposed at the distal portion. The impeller includes a blade with a trailing edge. The flow modifying structure is disposed downstream of the impeller. The flow modifying structure has a plurality of blades having a leading edge substantially parallel to and in close proximity to the trailing edge of the blade of the impeller and an expanse extending downstream from the leading edge. In some embodiments, the expanse has a first region with higher curvature and a second region with lower curvature. The first region is between the leading edge and the second region.
444 Citations
20 Claims
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1. A catheter pump assembly, comprising:
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a proximal portion; a distal portion; a catheter body having a lumen extending along a longitudinal axis between the proximal and distal portions; an impeller disposed at the distal portion, the impeller including a blade with a trailing edge; and a flow modifying structure disposed downstream of the impeller, the flow modifying structure having a plurality of blades having a leading edge substantially parallel to and in close proximity to the trailing edge of the blade of the impeller and an expanse extending downstream from the leading edge, the expanse having a first region with higher curvature and a second region with lower curvature, the first region being between the leading edge and the second region; wherein the flow modifying structure is collapsible from a deployed configuration to a collapsed configuration. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A catheter pump assembly, comprising:
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a proximal portion; a distal portion; a catheter body having a lumen extending along a longitudinal axis between the proximal and distal portions; an impeller disposed at the distal portion, the impeller including a blade with a trailing edge at an angle of more than about 60 degrees to the longitudinal axis of the impeller; and a flow modifying structure disposed downstream of the impeller, the flow modifying structure having a plurality of blades having a trailing edge being inclined relative to a transverse plane intersecting the trailing edge; wherein the flow modifying structure is collapsible from a deployed configuration to a collapsed configuration. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification