Cannula assembly
AssigneeABIOMED, Inc.
InventorsScott C. Corbett, Caitlyn Hastie
Life of this patent
Estimating the term…
Abstract
Cannula assemblies and methods of manufacturing cannula assemblies are provided. The cannula assembly includes a cannula and a pigtail extension coupled to the cannula. The pigtail extension includes a proximal section having a first stiffness and a distal section having a second stiffness, the first stiffness greater than the second stiffness. The proximal section of the pigtail extension is positioned between the cannula and at least a portion of the distal section.
Claims26
A cannula assembly for an intravascular heart pump system comprising:
- a cannula;
- and
- a pigtail extension coupled to a distal end of the cannula, the pigtail extension including:
- a proximal section having a first stiffness and a length, and
- a distal section having a second stiffness;
- wherein the proximal section incorporates at least one material configured such that the first stiffness is greater than the second stiffness;
- wherein the first stiffness is configured such that, when the cannula is inserted into a heart, the proximal section substantially maintains its length to position the cannula within the heart;
- and
- wherein the proximal section is positioned between the distal end of the cannula and at least a portion of the distal section.
A method of manufacturing a cannula assembly for an intravascular heart pump system, the method comprising:
- coupling a pigtail extension to a distal end of the cannula, the pigtail extension including a proximal section having a first stiffness and a distal section having a second stiffness, the proximal section positioned between the distal end of the cannula and at least a portion of the distal section, wherein the proximal section incorporates at least one material configured such that the first stiffness is greater than the second stiffness;
- and
- coupling a pump to the cannula, the cannula positioned between the pump and the pigtail extension, wherein the first stiffness is configured such that, when the cannula is inserted into a heart, the proximal section to substantially maintains its length to position the cannula within the heart.
Dependencies are inferred from the claim text.