Cannula adaptor for percutaneous blood pump

A percutaneous circulatory support system, comprising:

• a blood pump;
• a flexible cannula extending distal of the blood pump;
• an adaptor including a plurality of struts defining a plurality of blood inflow windows therebetween, each of the plurality of struts including a proximal face directly secured to a distal end face of the cannula, the adaptor having a proximal end coupled to a distal end of the cannula at an interface;
• wherein the proximal end of the adaptor comprises an opening formed by the proximal ends of the plurality of struts;
• a distal tip coupled to a distal end of the adaptor and extending distally therefrom;
• wherein the interface between the adaptor and the distal end of the cannula has a circular cross-sectional shape in an equilibrium configuration, and
• wherein the interface between the adaptor and the distal end of the cannula is configured to deform when subjected to an external force during use to alter the cross-sectional shape to a non-circular cross-sectional shape.

A percutaneous circulatory support system, comprising:

• a blood pump;
• a flexible cannula extending distal of the blood pump;
• an adaptor formed of one or more nickel-titanium alloys and including a plurality of struts defining a plurality of blood inflow windows therebetween, each of the plurality of struts including a proximal face directly secured to a distal end face of the cannula, the adaptor having a proximal end region coupled to a distal end of the cannula at an interface;
• wherein the proximal end region of the adaptor comprises a bendable annulus, wherein the plurality of struts extends proximally to the bendable annulus.
• a distal tip coupled to a distal end of the adaptor and extending distally therefrom;
• wherein the interface between the adaptor and the distal end of the cannula has a circular cross-sectional shape in an equilibrium configuration, and
• wherein the interface between the adaptor and the distal end of the cannula is configured to deform when subjected to an external force during use to alter the cross-sectional shape to a non-circular cross-sectional shape.