System for performing a cardiac procedure
First Claim
1. An endovascular intra-aortic catheter system for providing access to a patient'"'"'s heart through an aortic passageway leading away from an aortic valve in the patient'"'"'s heart while isolating the heart from the patient'"'"'s arterial system, comprising:
- a) an elongated catheter shaft which is advanceable through the aortic passageway leading away from the aortic valve of the patient'"'"'s heart, which has a proximal portion adapted to extend out of the patient and a distal portion adapted to be disposed within the patient'"'"'s ascending aorta and left ventricle, and which has a first inner lumen extending therein from a port in the distal portion of the catheter shaft to a location in the proximal portion;
b) a first expandable member on the distal portion of the catheter shaft spaced proximally from the port in the distal portion which is dimensioned and configured so that it occludes the aortic passageway within the ascending aorta when expanded; and
c) a second expandable member on the distal portion of the catheter shaft located proximally of the port in the distal portion and distally to the first expandable means and which is dimensioned and configured so that it seats within the left ventricle when expanded to secure the catheter as to minimize catheter movement within the aortic passageway, wherein said first and second expandable members are spaced-apart from each other by a distance sufficient to permit positioning in the aortic passageway and the left ventricle, respectively.
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0 Petitions
Accused Products
Abstract
A system for accessing a patient'"'"'s cardiac anatomy which includes an occlusion catheter with a first expandable member or balloon in a distal extremity of the catheter which when expanded within the patient'"'"'s ascending aorta separates the heart and coronary blood vessels from the rest of the patient'"'"'s arterial system, and a second expandable member, distal to the first, which when expanded will be seated within the left ventricle. A cardiopulmonary bypass system is connected to a major vein, e.g. femoral, to withdraw blood, remove carbon dioxide, oxygenate the withdrawn blood and then return the oxygenated blood to the patient'"'"'s arterial system through a major artery. Preferably, the heart muscle or myocardium is paralyzed by the antegrade and/or retrograde delivery of a liquid containing cardioplegic material to the myocardium through patient'"'"'s coronary arteries or coronary sinus. The cardiac accessing system is suitable for a wide variety of cardiac procedures including opened and closed chest procedures.
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Citations
30 Claims
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1. An endovascular intra-aortic catheter system for providing access to a patient'"'"'s heart through an aortic passageway leading away from an aortic valve in the patient'"'"'s heart while isolating the heart from the patient'"'"'s arterial system, comprising:
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a) an elongated catheter shaft which is advanceable through the aortic passageway leading away from the aortic valve of the patient'"'"'s heart, which has a proximal portion adapted to extend out of the patient and a distal portion adapted to be disposed within the patient'"'"'s ascending aorta and left ventricle, and which has a first inner lumen extending therein from a port in the distal portion of the catheter shaft to a location in the proximal portion; b) a first expandable member on the distal portion of the catheter shaft spaced proximally from the port in the distal portion which is dimensioned and configured so that it occludes the aortic passageway within the ascending aorta when expanded; and c) a second expandable member on the distal portion of the catheter shaft located proximally of the port in the distal portion and distally to the first expandable means and which is dimensioned and configured so that it seats within the left ventricle when expanded to secure the catheter as to minimize catheter movement within the aortic passageway, wherein said first and second expandable members are spaced-apart from each other by a distance sufficient to permit positioning in the aortic passageway and the left ventricle, respectively. - View Dependent Claims (2, 3, 4, 5, 6, 12, 13)
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7. An endovascular catheter system for providing access to a patient'"'"'s heart through the patient'"'"'s ascending aorta, comprising:
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a) an elongated catheter shaft which has at least one inner lumen extending therein and which is dimensioned and configured to be advanceable through an aortic passageway leading away from the patient'"'"'s heart through the ascending aorta; b) a first expandable member on a distal portion of the catheter shaft which is dimensioned and configured to occlude the aortic passageway when expanded therein; c) a second expandable member on the distal portion of the catheter shaft, distal to the first expandable means, which is dimensioned and configured to seat within the left ventricle adjacent to the aortic valve when expanded to minimize movement of the catheter within the aortic passageway; d) a port in the distal portion of the catheter shaft distal to the second expandable member in fluid communication with the inner lumen which is adapted to withdraw fluid outside of the catheter into the inner lumen; and e) a second port in the catheter shaft between the first and second expandable members in communication with a second inner lumen extending within the catheter shaft and adapted to infuse a fluid into the aortic passageway between the first and second expandable members. - View Dependent Claims (8, 9, 10, 11, 14, 15)
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16. A system for preparing a patient for a cardiac procedure, comprising:
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a) an elongated aortic occlusion catheter adapted to be advanced to a location within a patient'"'"'s ascending aorta, having proximal and distal ends, having a first inner lumen extending therein to a distal port in the distal end of the catheter, having a first expandable member on a distal portion thereof which when expanded within the patient'"'"'s ascending aorta occludes the aortic passageway, having a second expandable member distal to the first expandable member which is configured so that it seats within the patient'"'"'s left ventricle when expanded so as to minimize catheter movement within the aortic passageway, and having a second inner lumen extending therein to a perfusion port disposed between said first and second expandable members; b) a cardiopulmonary bypass system having means to withdraw blood from the patient'"'"'s venous system, means to oxygenate the withdrawn blood and means to direct the oxygenated blood into the patient'"'"'s arterial system; and c) means connected to the second inner lumen to deliver cardioplegic material to the patient'"'"'s myocardium. - View Dependent Claims (17, 18, 19, 20, 21, 22)
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23. A method of accessing a patient'"'"'s coronary anatomy comprising:
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a) advancing to a location within a patient'"'"'s ascending aorta and left ventricle an elongated catheter which has proximal and distal ends, which has an inner lumen extending therein to a port in the distal end and which has first and second expandable members on a distal portion thereof; b) expanding the first expandable member within the patient'"'"'s ascending aorta between the coronary ostia and brachiocephalic artery to block blood flow therethrough; and c) expanding the second expandable member within the patient'"'"'s left ventricle to seat the expanded second member therein. - View Dependent Claims (24, 25, 26, 27)
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28. A method for performing an endovascular cardiac procedure on a patient, comprising:
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a) advancing to a location within a patient'"'"'s ascending aorta and left ventricle an elongated delivery catheter which has proximal and distal ends, which has an inner lumen extending therein to a port in the distal end and which has first and second expandable members on a distal portion thereof; b) expanding the first expandable member within the patient'"'"'s ascending aorta between the coronary ostia and brachiocephalic artery to block blood flow therethrough; and c) expanding the second expandable member within the patient'"'"'s left ventricle to seat the expanded second member therein; d) withdrawing blood from the patient'"'"'s venous system, oxygenating the withdrawn blood and returning the oxygenated blood to the patient'"'"'s arterial system; and e) passing one or more instruments for performing the cardiac procedure through the inner lumen of the delivery catheter. - View Dependent Claims (29, 30)
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Specification