Left ventricular conduits and methods for delivery
First Claim
1. A method of delivering a conduit into a heart wall between a heart chamber and an adjacent blood vessel, comprising:
- inserting a hollow needle through an anterior wall and a posterior wall of the blood vessel through the heart wall and into the heart chamber;
inserting a guidewire through the hollow needle into the heart chamber;
removing the hollow needle;
inserting a dilator over the guidewire into the heart wall;
removing the guidewire; and
placing a conduit over the dilator into the heart wall.
1 Assignment
0 Petitions
Accused Products
Abstract
Conduits are provided to direct blood flow from the left ventricle to a coronary artery at a location distal to a blockage in the coronary artery. Threaded and nonthreaded conduits are delivered using a guidewire delivered through the posterior and anterior walls of a coronary artery and into the heart wall. A dilator may be provided over the guidewire into the heart wall, and the conduit delivered over the dilator. An introducer sleeve may be provided over the dilator into the heart wall, the dilator removed, and the conduit delivered through the introducer sleeve. A hollow needle also may be inserted into the posterior and anterior walls of the coronary artery prior to inserting the guidewire. A depth measuring tool may determine the appropriate length of the conduit prior to delivery. The depth measuring tool can include the hollow needle with an access port on a proximal end of the needle and an opening on the distal end of the needle in flow communication with the access port so that when the needle is inserted through the heart wall and into the heart chamber, blood flow through the opening.
253 Citations
54 Claims
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1. A method of delivering a conduit into a heart wall between a heart chamber and an adjacent blood vessel, comprising:
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inserting a hollow needle through an anterior wall and a posterior wall of the blood vessel through the heart wall and into the heart chamber;
inserting a guidewire through the hollow needle into the heart chamber;
removing the hollow needle;
inserting a dilator over the guidewire into the heart wall;
removing the guidewire; and
placing a conduit over the dilator into the heart wall. - View Dependent Claims (2, 3, 4)
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5. A method of delivering a conduit into a heart wall between a heart chamber and an adjacent blood vessel, comprising:
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inserting a hollow needle through an anterior wall and a posterior wall of the blood vessel through the heart wall and into the heart chamber;
inserting a guidewire through the hollow needle into the heart chamber;
removing the hollow needle;
inserting a dilator over the guidewire into the heart wall;
removing the guidewire; and
placing a conduit over the dilator into the heart wall, wherein placing the conduit includes screwing the conduit into the heart wall. - View Dependent Claims (6, 7, 8)
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9. A method of providing direct blood flow between a heart chamber and a coronary vessel, the method comprising:
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placing a guide device through an anterior wall and a posterior wall of the coronary vessel and through a heart wall between the heart chamber and the coronary vessel;
forming a passageway in the heart wall at a location defined by the guide device;
placing a conduit within the passageway; and
delivering via the guide device a first mechanism for forming the passageway and a second mechanism for placing the conduit within the passageway. - View Dependent Claims (10, 11, 12, 13)
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14. A method for inserting a conduit into a heart wall between a heart chamber and the coronary artery, comprising:
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screwing a stylet having a threaded tip and a nonthreaded body portion into the heart wall;
screwing an outer sleeve having a threaded exterior over the nonthreaded body portion of the stylet;
removing the stylet; and
inserting the conduit into the heart wall through the outer sleeve.
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15. A method for advancing a device into the heart wall of a patient through a coronary artery, comprising:
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screwing a threaded device into the coronary artery to open the artery;
pulling back on the artery; and
screwing the threaded device into the heart wall.
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16. A method of delivering a conduit into a heart wall between a heart chamber and an adjacent blood vessel, comprising:
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inserting a hollow needle into the heart wall through the blood vessel into the heart chamber;
inserting a guidewire through the hollow needle into the heart chamber;
removing the hollow needle;
inserting a dilator over the guidewire into the heart wall;
removing the guidewire; and
screwing a threaded conduit over the dilator into the heart wall.
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17. A method of providing direct blood flow between a heart chamber and a coronary vessel, the method comprising:
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placing a guide device through an anterior wall and a posterior wall of the coronary vessel and through a heart wall between the heart chamber and the coronary vessel;
forming a passageway in the heart wall at a location defined by the guide device by inserting a dilator over the guide device at the location; and
placing a conduit within the passageway, wherein the conduit is positioned over the dilator for placement within the passageway. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A method of providing direct blood flow between a heart chamber and a coronary vessel, the method comprising:
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placing a guide device through an anterior wall and a posterior wall of the coronary vessel and through a heart wall between the heart chamber and the coronary vessel;
forming a passageway in the heart wall at a location defined by the guide device; and
placing a conduit within the passageway by screwing the conduit into the heart wall. - View Dependent Claims (40, 41, 42, 43, 44)
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45. A method of providing direct blood flow between a heart chamber and a coronary vessel, the method comprising:
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positioning a guide device external to the coronary vessel and moving a distal tip of the guide device toward an external surface of an anterior wall of the coronary vessel;
placing the guide device through at least one wall of the coronary vessel and through a heart wall between the heart chamber and the coronary vessel;
forming a passageway in the heart wall at a location defined by the guide device by inserting a dilator over the guide device at the location; and
placing a conduit within the passageway, wherein the conduit is positioned over the dilator for placement within the passageway. - View Dependent Claims (46, 47, 48, 49, 50, 51, 52, 53, 54)
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Specification