Cannula for heart chamber implantation and related systems and methods

A heart assist system for coupling into fluid communication with a chamber of a heart comprising:

• a blood pump including an inlet;
• an elongate body including a first end, a second end, and a lumen adapted to be coupled into fluid communication with said inlet, said lumen extending along a longitudinal axis, said first and second ends defining openings into said lumen, said second end including a flat portion;
• a flared tip portion on said elongate body and extending from said flat portion of said second end in a direction toward said first end, and flaring radially outward from said longitudinal axis and in said direction;
• and
• a ring member on said elongate body and extending around said longitudinal axis, said ring member being spaced from said flared tip portion and being adapted for retaining said elongate body in a position relative to a wall of the chamber of the heart.

A cannula for implantation into a chamber of a heart comprising:

• an elongate body including a lumen extending along a longitudinal axis, a first end and a second end, said first and second ends defining openings into said lumen;
• a flared tip portion on said elongate body and extending from said second end in a direction toward said first end, and flaring radially outward from said longitudinal axis and in said direction, said flared tip portion being configured to flex toward said longitudinal axis when said elongate body travels through an aperture in a wall of the chamber of the heart;
• and
• a ring member on said elongate body and extending around said longitudinal axis, said ring member being spaced from said flared tip portion and being adapted for retaining said elongate body in a position relative to the wall of the chamber of the heart.

A heart assist system for coupling into fluid communication with a chamber of a heart comprising:

• a blood pump including an inlet;
• an elongate body including a first end, a second end, and a lumen adapted to be coupled into fluid communication with said inlet, said lumen extending along a longitudinal axis, said first and second ends defining openings into said lumen;
• a flared tip portion on said elongate body and extending from said second end in a direction toward said first end, and flaring radially outward from said longitudinal axis and in said direction, said flared tip portion being configured to flex toward said longitudinal axis when said flared tip portion travels through an aperture in a wall of the chamber of the heart;
• and
• a ring member on said elongate body and extending around said longitudinal axis, said ring member being spaced from said flared tip portion and being adapted for retaining said elongate body in a position relative to the wall of the chamber of the heart.

A cannula for implantation into a chamber of a heart comprising:

• an elongate body including a lumen extending along a longitudinal axis, a first end and a second end, said first and second ends defining openings into said lumen;
• a flared tip portion on said elongate body and extending from said second end in a direction toward said first end, and flaring radially outward from said longitudinal axis and in said direction, said flared tip portion including a barbed surface configured to contact tissue around an aperture in a wall of the chamber of the heart when said elongate body travels through the aperture;
• and
• a ring member on said elongate body and extending around said longitudinal axis, said ring member being spaced from said flared tip portion and being adapted for retaining said elongate body in a position relative to the wall of the chamber of the heart.

A heart assist system for coupling into fluid communication with a chamber of a heart comprising:

• a blood pump including an inlet;
• an elongate body including a first end, a second end, and a lumen adapted to be coupled into fluid communication with said inlet, said lumen extending along a longitudinal axis, said first and second ends defining openings into said lumen;
• a flared tip portion on said elongate body and extending from said second end in a direction toward said first end, and flaring radially outward from said longitudinal axis and in said direction, said flared tip portion including a barbed surface configured to contact tissue around an aperture in a wall of the chamber of the heart when said flared tip portion travels through the aperture;
• and
• a ring member on said elongate body and extending around said longitudinal axis, said ring member being spaced from said flared tip portion and being adapted for retaining said elongate body in a position relative to the wall of the chamber of the heart.

A cannula for implantation into a chamber of a heart comprising:

• an elongate body including a lumen extending along a longitudinal axis, a first end and a second end, said first and second ends defining openings into said lumen;
• a metallic flared tip portion on said elongate body and extending from said second end in a direction toward said first end, and flaring radially outward from said longitudinal axis and in said direction;
• and
• a first ring member on said elongate body and extending around said longitudinal axis, said first ring member being spaced from said metallic flared tip portion and adapted for retaining said elongate body in a position relative to a wall of the chamber of the heart.

A heart assist system for coupling into fluid communication with a chamber of a heart comprising:

• a blood pump including an inlet;
• an elongate body including a first end, a second end, and a lumen adapted to be coupled into fluid communication with said inlet, said lumen extending along a longitudinal axis, said first and second ends defining openings into said lumen;
• a metallic flared tip portion on said elongate body and extending from said second end in a direction toward said first end, and flaring radially outward from said longitudinal axis and in said direction;
• and
• a ring member on said elongate body and extending around said longitudinal axis, said ring member being spaced from said metallic flared tip portion and adapted for retaining said elongate body in a position relative to a wall of the chamber of the heart.

A method of implanting a cannula having a longitudinal axis into a chamber of a heart, the chamber of the heart having a wall and an aperture through the wall, the method comprising:

• moving the cannula in a first direction through the aperture;
• receiving a flared tip portion of the cannula within the chamber of the heart, the flared tip portion extending from a flat portion on an end of the cannula;
• and
• establishing a position of the cannula within the chamber of the heart and along the longitudinal axis by contacting the wall of the chamber of the heart with a ring member extending around the longitudinal axis.