Valved apical conduit with trocar for beating-heart ventricular assist device placement
First Claim
1. An inflow cuff for beating-heart apical cannulation of a heart, comprising:
- a tube having a first end and a second end, said first end constructed and adapted to be inserted into the heart;
a sewing ring disposed on an exterior surface of said tube proximate to said first end, said sewing ring constructed and adapted to be sutured to an exterior wall of the heart and to retain the first end of said tube at a selected position in the heart; and
a valve disposed on and integral with the interior of said tube, said valve having two or more compliant leaves constructed and adapted to form a releasable seal with one another, said valve (1) preventing blood flow out of the heart when closed and (2) opening in response to pressure directed towards the heart, said valve being disposed further from the first end of said tube than said sewing ring;
wherein said inflow cuff is constructed and arranged to allow the passage of a trocar through its lumen, the trocar constructed and arranged to form a hole in the heart of sufficient size to admit the first end of said inflow cuff, and wherein said inflow cuff is constructed and arranged to permit withdrawal of the trocar and the insertion of a conduit through the lumen of said inflow cuff to establish a route for blood flow out of the heart.
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Accused Products
Abstract
An inflow cuff with trocar for apical cannulation of the heart. The inflow cuff has an omni-directional or unidirectional valve that prevents blood from flowing out of the heart, thus facilitating apical cannulation in beating-heart situations. The inflow cuff is particularly suited for use in ventricular assist device (VAD) implantation procedures, in which the trocar would be used to punch a hole in the apex, followed by immediate insertion of the inflow cuff. If used in a VAD implantation procedure, the valve of the inflow cuff prevents blood loss until an inflow conduit from the VAD is inserted.
122 Citations
19 Claims
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1. An inflow cuff for beating-heart apical cannulation of a heart, comprising:
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a tube having a first end and a second end, said first end constructed and adapted to be inserted into the heart;
a sewing ring disposed on an exterior surface of said tube proximate to said first end, said sewing ring constructed and adapted to be sutured to an exterior wall of the heart and to retain the first end of said tube at a selected position in the heart; and
a valve disposed on and integral with the interior of said tube, said valve having two or more compliant leaves constructed and adapted to form a releasable seal with one another, said valve (1) preventing blood flow out of the heart when closed and (2) opening in response to pressure directed towards the heart, said valve being disposed further from the first end of said tube than said sewing ring;
wherein said inflow cuff is constructed and arranged to allow the passage of a trocar through its lumen, the trocar constructed and arranged to form a hole in the heart of sufficient size to admit the first end of said inflow cuff, and wherein said inflow cuff is constructed and arranged to permit withdrawal of the trocar and the insertion of a conduit through the lumen of said inflow cuff to establish a route for blood flow out of the heart. - View Dependent Claims (2, 3, 4, 5, 17, 18)
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6. A medical device which may be inserted into the heart of a patient to provide a passageway for blood flow, comprising:
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an inflow cuff having a lumen and a valve, wherein said valve (1) prevents blood from flowing out of the heart when closed and (2) opens in response to pressure in the lumen of said conduit directed inward toward the heart;
a trocar which is inserted longitudinally through the lumen of said inflow cuff and protrudes beyond an insertion end of said inflow cuff, said trocar being retractable and removable from the lumen of said inflow cuff;
wherein the lumen of said inflow cuff is sized to allow the insertion of a conduit into the heart. - View Dependent Claims (7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 19)
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Specification