Expandable impeller pump
First Claim
1. A method for manufacturing a catheter device, the method comprising:
- forming an impeller body comprising a hub and a blade to have a continuous material or structure extending from within the hub to within the blade;
forming an expandable sleeve; and
disposing the impeller body within at least a portion of the expandable sleeve.
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Accused Products
Abstract
An impeller includes a hub, and a plurality of blades supported by the hub, the blades being arranged in at least two blade rows. The impeller has a deployed configuration in which the blades extend away from the hub, and a stored configuration in which at least one of the blades is radially compressed, for example by folding the blade towards the hub. The impeller may also have an operational configuration in which at least some of the blades are deformed from the deployed configuration upon rotation of the impeller when in the deployed configuration. The outer edge of one or more blades may have a winglet, and the base of the blades may have an associated indentation to facilitate folding of the blades.
361 Citations
37 Claims
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1. A method for manufacturing a catheter device, the method comprising:
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forming an impeller body comprising a hub and a blade to have a continuous material or structure extending from within the hub to within the blade; forming an expandable sleeve; and disposing the impeller body within at least a portion of the expandable sleeve. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method for manufacturing a catheter pump, the method comprising:
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providing an impeller body; forming an expandable and collapsible sleeve comprising a mesh and an elastic coating about the mesh, the mesh disposed between an inlet and an outlet of the catheter pump, the mesh arranged such that the sleeve has a collapsed configuration and an expanded configuration, the mesh arranged such that the sleeve remains in the expanded configuration when the impeller body and the sleeve are positioned within a patient during operation of the catheter pump, the sleeve in the expanded configuration defining a flow path through which blood flows, the mesh further arranged such that the sleeve is configured to move to the collapsed configuration from the expanded configuration for storing the catheter pump; and disposing the impeller body within at least a portion of the expandable and collapsible sleeve such that the mesh substantially surrounds the impeller body, wherein the outlet is defined at least in part by the mesh, wherein the outlet comprises an open mesh region that is not covered by the elastic coating such that blood can discharge through the outlet. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A catheter pump comprising:
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an expandable and collapsible sleeve comprising a mesh and an elastic coating about the mesh, the mesh disposed between an inlet and an outlet of the pump, the outlet defined at least in part by the mesh, wherein the outlet comprises an open mesh region that is not covered by the elastic coating such that blood can discharge through the outlet; and an impeller body positioned within at least a portion of the expandable and collapsible sleeve, the mesh arranged such that the sleeve has a collapsed configuration and an expanded configuration, the mesh arranged such that the sleeve remains in the expanded configuration when the impeller body and the sleeve are positioned within a patient during operation of the catheter pump, the sleeve in the expanded configuration defining a flow path through which blood flows, the mesh further arranged such that the sleeve is configured to move to the collapsed configuration from the expanded configuration for storing the catheter pump. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A catheter pump comprising:
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an expandable sleeve comprising a mesh disposed between inlets and outlets of the pump; and an impeller body positioned within at least a portion of the expandable sleeve; wherein the expandable sleeve encloses a fluid flow path, the catheter pump further comprising fluid flow modifying elements disposed in the fluid flow path to influence flow dynamics in the fluid flow path, and wherein the fluid flow modifying elements comprise linear elements.
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31. A catheter pump comprising:
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an expandable sleeve comprising a mesh disposed between inlets and outlets of the pump; and an impeller body positioned within at least a portion of the expandable sleeve, wherein the expandable sleeve encloses a fluid flow path, the catheter pump further comprising fluid flow modifying elements disposed in the fluid flow path to influence flow dynamics in the fluid flow path, and wherein the fluid flow modifying elements are configured to remove swirl velocity from the impeller discharge flow.
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32. A method for manufacturing a catheter pump, the method comprising:
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providing an impeller body; forming an expandable and collapsible sleeve comprising a mesh, the mesh arranged such that the sleeve has a collapsed configuration and an expanded configuration, the mesh arranged such that the sleeve remains in the expanded configuration when the impeller body and the sleeve are positioned within a patient during operation of the catheter pump, the sleeve in the expanded configuration defining a flow path through which blood flows, the mesh further arranged such that the sleeve is configured to move to the collapsed configuration from the expanded configuration for storing the catheter pump; disposing the impeller body within at least a portion of the expandable and collapsible sleeve such that the mesh substantially surrounds the impeller body; and coupling the impeller to a distal portion of an elongate body having sufficient length such that, when the impeller body is positioned within a patient, the distal portion of the elongate body is positioned within the patient and a proximal portion of the elongate body is positioned outside the patient.
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33. A catheter pump comprising:
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an expandable and collapsible sleeve comprising a mesh disposed between inlets and outlets of the pump; an impeller body positioned within at least a portion of the expandable and collapsible sleeve, the mesh arranged such that the sleeve has a collapsed configuration and an expanded configuration, the mesh arranged such that the sleeve remains in the expanded configuration when the impeller body and the sleeve are positioned within a patient during operation of the catheter pump, the sleeve in the expanded configuration defining a flow path through which blood flows, the mesh further arranged such that the sleeve is configured to move to the collapsed configuration from the expanded configuration for storing the catheter pump; and an elongate body having a distal portion and a proximal portion, the impeller body coupled to the distal portion of the elongate body, wherein the impeller body and the elongate body are arranged such that, when the impeller body is positioned within a patient, the distal portion of the elongate body is positioned within the patient and the proximal portion of the elongate body is positioned outside the patient. - View Dependent Claims (34)
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35. A catheter pump comprising:
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an expandable and collapsible sleeve comprising a mesh disposed between an inlet and an outlet of the pump; and an impeller body positioned within at least a portion of the expandable and collapsible sleeve, the mesh arranged such that the sleeve has a collapsed configuration and an expanded configuration, the mesh arranged such that the sleeve remains in the expanded configuration when the impeller body and the sleeve are positioned within a patient during operation of the catheter pump, the sleeve in the expanded configuration defining a flow path through which blood flows, the mesh further arranged such that the sleeve is configured to move to the collapsed configuration from the expanded configuration for storing the catheter pump, wherein the outlet is defined in a transition region between a first portion of the mesh surrounding the impeller and a non-expandable elongate member, the non-expandable elongate member extending proximally from the transition region, wherein the transition regions comprises a second portion of the mesh that is coarser than the first portion of the mesh surrounding the impeller. - View Dependent Claims (36, 37)
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Specification