Transseptal cannula, tip, delivery system, and method
First Claim
1. A cannula assembly for directing blood from a heart of a patient, comprising:
- a flexible cannula body including a proximal portion and a distal portion and a lumen therebetween;
a unitary rigid tip coupled to the distal portion of the flexible cannula body; and
a first anchor coupled with the unitary rigid tip and comprising a plurality of struts extending generally transverse to the lengthwise central axis of the flexible body, the first anchor configured to be deployed from a contracted state to an expanded state, wherein the first anchor is configured to engage at least one side of heart tissue in the expanded state and is operable to resist movement of the cannula assembly in a proximal direction along a lengthwise central axis of the flexible cannula body; and
a second anchor coupled with the unitary rigid tip and located proximate to and spaced away from the first anchor, the second anchor operable to prevent movement of the cannula assembly in a distal direction.
1 Assignment
0 Petitions
Accused Products
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.
136 Citations
25 Claims
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1. A cannula assembly for directing blood from a heart of a patient, comprising:
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a flexible cannula body including a proximal portion and a distal portion and a lumen therebetween; a unitary rigid tip coupled to the distal portion of the flexible cannula body; and a first anchor coupled with the unitary rigid tip and comprising a plurality of struts extending generally transverse to the lengthwise central axis of the flexible body, the first anchor configured to be deployed from a contracted state to an expanded state, wherein the first anchor is configured to engage at least one side of heart tissue in the expanded state and is operable to resist movement of the cannula assembly in a proximal direction along a lengthwise central axis of the flexible cannula body; and a second anchor coupled with the unitary rigid tip and located proximate to and spaced away from the first anchor, the second anchor operable to prevent movement of the cannula assembly in a distal direction. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A delivery system comprising:
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a cannula assembly comprising; a flexible cannula body including a proximal portion and a distal portion and a lumen therebetween; a unitary rigid tip coupled to the distal portion of the flexible cannula body; a first anchor coupled with the unitary rigid tip and comprising a plurality of struts extending generally transverse to the lengthwise central axis of the flexible body, the first anchor configured to be deployed from a contracted state to an expanded state, wherein the first anchor is configured to engage at least one side of heart tissue in the expanded state and is operable to resist movement of the cannula assembly in a proximal direction along a lengthwise central axis of the flexible cannula body; and a second anchor coupled with the unitary rigid tip and located proximate to and spaced away from the first anchor, the second anchor operable to prevent movement of the cannula assembly in a distal direction; and a delivery sheath, wherein the delivery sheath is configured to receive the flexible cannula body and move relative thereto for deploying the first and second anchors into the expanded state. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A circulatory assist system for assisting the flow of blood through a patient circulatory system, comprising:
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a cannula assembly for directing blood from the heart of a patient, the cannula assembly comprising a flexible cannula body including a proximal portion and a distal portion and a lumen therebetween, a unitary rigid tip coupled to the distal portion of the flexible cannula body, a first anchor coupled to the unitary rigid tip and comprising a plurality of struts extending generally transverse to the lengthwise central axis of the flexible body, the first anchor configured to be deployed from a contracted state to an expanded state, and a second anchor coupled to the unitary rigid tip and located proximate to and spaced away from the first anchor, the second anchor comprising a plurality of struts extending generally transverse to the lengthwise central axis of the flexible body, the second anchor configured to be deployed from a contracted state to an expanded state; a pump for drawing blood into the cannula assembly and dispensing the blood from the cannula assembly and into the patient circulatory system; and a controller operably associated with the pump. - View Dependent Claims (21)
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22. A delivery system for delivering a cannula assembly having a flexible cannula body, a unitary rigid tip coupled to a distal portion of the flexible cannula body, a first anchor coupled with the unitary rigid tip and configured to be deployed from a contracted state to an expanded state, and a second anchor coupled with the unitary rigid tip and located proximate to and spaced away from the first anchor, the delivery system comprising:
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a delivery sheath configured to receive the flexible cannula body and move relative thereto to deploy the first and second anchors into the expanded state; and a balloon catheter having a distal balloon portion wherein the distal balloon portion in a first inflated state is operable to maintain a relative position between the delivery sheath and the unitary rigid tip while delivering the cannula assembly, the distal balloon portion in a second inflated state is operable to maintain a position of the cannula assembly while the delivery sheath moves to deploy the first and second anchors. - View Dependent Claims (23)
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24. A cannula assembly comprising:
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a flexible cannula body having distal and proximal ends with a lumen extending therebetween, the distal end including an attachment portion; a unitary rigid tip having distal and proximal ends, the proximal end including a receiving portion and removably engaging the attachment portion of the flexible cannula body; and first and second anchors coupled to the unitary rigid tip and configured to be deployed from a contracted state to an expanded state, the first and second anchors configured to engage opposite sides of a heart tissue.
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25. A cannula assembly for directing blood from a heart of a patient, comprising:
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a flexible cannula body including a proximal portion and a distal portion and a lumen therebetween extending along a lengthwise central axis; a unitary rigid tip coupled to the distal portion of the flexible cannula body; a first anchor coupled with the unitary rigid tip and configured to be deployed from a contracted state to an expanded state, wherein the first anchor is configured to engage a first side of heart tissue in the expanded state to resist movement of the cannula assembly in a proximal direction along the lengthwise central axis; and a second anchor coupled to the unitary rigid tip and located proximate to and spaced away from the first anchor, wherein the second anchor is configured to be deployed from a contracted state to an expanded state, and the second anchor is configured to engage a second side of the heart tissue opposite to the first side in the expanded state to resist movement of the cannula assembly in a distal direction along the lengthwise central axis.
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Specification