Methods of securing a cannula assembly, implanting a circulatory assist system and crossing a tissue barrier
First Claim
1. A method of securing a cannula assembly to a heart of a patient for directing blood from the heart, comprising:
- introducing a distal portion of a flexible cannula assembly through a wall of the heart, the cannula assembly including a unitary rigid tip at the distal portion;
deploying a first anchor coupled to the unitary rigid tip from a contracted state to an expanded state;
engaging at least one side of the wall with the expanded first anchor;
deploying a second anchor coupled to the unitary rigid tip from a contracted state to an expanded state; and
engaging the wall of the heart with the expanded second anchor on a side opposite the expanded first anchor to thereby secure the wall between the first and second anchors;
pumping blood from the heart into the cannula assembly; and
directing the blood into the patient circulatory system.
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Abstract
A transseptal cannula assembly for directing blood from the heart of a patient and a minimally invasive method of implanting the same. The transseptal cannula assembly includes a flexible cannula body having proximal and distal portions with a lumen therebetween, a tip coupled to the distal portion of the flexible cannula body, and first and second anchors coupled to the tip. The anchors can be configured to be deployed from a contracted state to an expanded state and are configured to engage opposite sides of the heart tissue when in the expanded state. The anchors resist movement of the cannula assembly along a lengthwise central axis of the flexible cannula body.
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Citations
23 Claims
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1. A method of securing a cannula assembly to a heart of a patient for directing blood from the heart, comprising:
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introducing a distal portion of a flexible cannula assembly through a wall of the heart, the cannula assembly including a unitary rigid tip at the distal portion; deploying a first anchor coupled to the unitary rigid tip from a contracted state to an expanded state; engaging at least one side of the wall with the expanded first anchor; deploying a second anchor coupled to the unitary rigid tip from a contracted state to an expanded state; and engaging the wall of the heart with the expanded second anchor on a side opposite the expanded first anchor to thereby secure the wall between the first and second anchors; pumping blood from the heart into the cannula assembly; and directing the blood into the patient circulatory system. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23)
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Specification