Device and method for delivery of medical devices to a cardiac valve
First Claim
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1. A method for transvascularly delivering a medical device to a cardiac valve of a patient, said method comprising:
- introducing a catheter in a relaxed state into said vascular system, said catheter comprising an elongate sheath having a first lumen a second lumen that extends coaxially with said first lumen along a portion of said elongate sheath between a proximal end of said elongate sheath and a distal end of said elongate sheath;
navigating said distal end of said elongate sheath through said vascular system to a site of said cardiac valve;
covering ostia of the side branch vessels in the aortic arch by expanding an embolic protection unit from said second lumen and thereby stabilizing the distal portion of said catheter at the site of said cardiac valve;
said embolic protection unit comprising an embolic filter that expands to a substantially planar shape; and
delivering a medical device through the first lumen of said elongate sheath to said site of said heart valve while said embolic protection unit covers said ostia, captures or deflects embolic material, and allows blood to flow from the aortic arch into the side branch vessels.
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Abstract
A catheter device for transvascular delivery of a medical device to a cardiac valve region of a patient comprises an elongate sheath with a first lumen, a distal end for positioning at a heart valve, a second lumen that extends parallel to or in the sheath, and an expandable embolic protection filter. The filter is arranged to extend from an orifice of the second lumen and, in the expanded, covers ostia of the side branch vessels in the aortic arch.
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Citations
13 Claims
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1. A method for transvascularly delivering a medical device to a cardiac valve of a patient, said method comprising:
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introducing a catheter in a relaxed state into said vascular system, said catheter comprising an elongate sheath having a first lumen a second lumen that extends coaxially with said first lumen along a portion of said elongate sheath between a proximal end of said elongate sheath and a distal end of said elongate sheath; navigating said distal end of said elongate sheath through said vascular system to a site of said cardiac valve; covering ostia of the side branch vessels in the aortic arch by expanding an embolic protection unit from said second lumen and thereby stabilizing the distal portion of said catheter at the site of said cardiac valve;
said embolic protection unit comprising an embolic filter that expands to a substantially planar shape; anddelivering a medical device through the first lumen of said elongate sheath to said site of said heart valve while said embolic protection unit covers said ostia, captures or deflects embolic material, and allows blood to flow from the aortic arch into the side branch vessels. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for stabilizing a catheter in an aortic arch, said method comprising:
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introducing a catheter comprising a first lumen and a second lumen into a vascular system; navigating a distal end of the catheter to said aortic arch; expanding an embolic protection unit from the first lumen to engage an inner surface of said aortic arch and cover the ostia of side branch vessels of the aortic arch, said embolic protection unit expanding to a substantially planar shape with a distal end that is directly unconnected from the catheter; and delivering a medical device through the second lumen and near a cardiac valve while the embolic protection unit blocks embolic material from entering the side branch vessels of the aortic arch and while the embolic protection unit also allows passage of blood into the side branch vessels; wherein said embolic protection unit is connected to a delivery unit inside said lumen, thereby limiting the movement of the catheter within the aortic arch. - View Dependent Claims (11, 12)
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13. A method for transvascularly delivering a medical device to a cardiac valve of a patient, said method comprising:
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introducing an elongate sheath into said vascular system, said elongate sheath having a first channel and a second channel; navigating a distal end of said elongate sheath through said vascular system to an ascending aortic arch; covering ostia of the side branch vessels in the aortic arch by expanding an embolic protection unit from said first channel into a substantially planar shape; allowing passage of blood from the aortic arch through said embolic protection unit while deflecting or capturing emboli; introducing a catheter into said second channel, said catheter having a lumen; navigating a distal end of said catheter through said second channel to a site of said cardiac valve; and delivering a medical device through the second channel of said elongate sheath to said site of said heart valve while said embolic protection unit covers said ostia.
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Specification