Cannula, ECMO assistance system
AssigneeAssistance Publique-Hopitaux de Paris
InventorPierre Mordant
Life of this patent
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Abstract
A cannula for the circulation of a fluid in an artery, includes a main lumen conveying a volume of fluid towards a first distal end; an accessory lumen including at least one inner portion arranged inside the main lumen, including: a proximal end situated downstream from the proximal end of the main lumen so as to capture a fraction of the flow of fluid entering the main lumen; a bent portion modifying the direction of flow of the fluid flow captured by the accessory lumen with respect to the direction of flow of the fluid emerging from the first end; a second distal end situated upstream from the first distal end of the main lumen, emerging on a side opening of the cannula so as to direct the captured fraction of liquid in the modified direction of flow.
Claims12
A cannula for circulation of a fluid in an artery, comprising:
- a main lumen, conveying a volume of fluid to a first distal end;
- a secondary lumen, containing at least one inner portion positioned inside the main lumen, and partly extending parallel to the latter over a portion of the length of the main lumen, where the secondary lumen includes:
- a proximal end located downstream from a proximal end of the main lumen, so as to divert a fraction of an incoming flow rate of the fluid in the main lumen;
- an elbow portion modifying the direction of flow of the flow rate of fluid diverted by the secondary lumen relative to a direction of flow of the fluid emerging from the first end;
- a second distal end upstream from the first distal end of the main lumen, flowing out through a lateral aperture of the cannula, so as to direct the diverted fraction of the liquid in the modified flow direction, where the second distal end corresponds to the lateral aperture.
Dependencies are inferred from the claim text.