Renal pump
First Claim
Patent Images
1. Apparatus comprising:
- an impeller, comprising;
an impeller frame that comprises proximal and distal end portions and a plurality of helical elongate elements that wind from the proximal end portion to the distal end portion, the helical elongate elements defining proximal and distal ends thereof; and
a material that is coupled to the helical elongate elements, such that the helical elongate elements with the material coupled thereto define at least one blade of the impeller,the helical elongate elements defining the outer edges of the impeller and being configured to support the material between the proximal and distal ends of the helical elongate elements, andthe impeller not comprising any additional supporting member for supporting the material between the proximal and distal ends of the helical elongate elements.
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Accused Products
Abstract
Apparatus and methods are described including identifying a subject as suffering from a condition selected from the group consisting of: cardiac dysfunction, congestive heart failure, reduced renal blood flow, increased renal vascular resistance, arterial hypertension, and kidney dysfunction. In response thereto, blood pressure within a renal vein of the subject is reduced, by placing a blood pump inside the subject'"'"'s renal vein and activating the impeller to pump blood from the renal vein into the subject'"'"'s vena cava. Other applications are also described.
130 Citations
9 Claims
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1. Apparatus comprising:
an impeller, comprising; an impeller frame that comprises proximal and distal end portions and a plurality of helical elongate elements that wind from the proximal end portion to the distal end portion, the helical elongate elements defining proximal and distal ends thereof; and a material that is coupled to the helical elongate elements, such that the helical elongate elements with the material coupled thereto define at least one blade of the impeller, the helical elongate elements defining the outer edges of the impeller and being configured to support the material between the proximal and distal ends of the helical elongate elements, and the impeller not comprising any additional supporting member for supporting the material between the proximal and distal ends of the helical elongate elements. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
Specification