Method and apparatus for the endoluminal delivery of intravascular devices
First Claim
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1. A system for treating a native heart valve in a patient using endoluminal delivery through vasculature of a patient to a native heart valve seat, the system comprising:
- a stent-valve;
an outer delivery sheath including a distal section, wherein at least a portion of the outer delivery sheath is sized for insertion into the vasculature of the patient, wherein at least a portion of the distal section of the outer delivery sheath is expandable and comprises a plurality of piezo-ceramic elements configured to expand the distal section of the outer delivery sheath upon electrically activating the plurality of piezo-ceramic elements;
a carrier segment located at a distal portion of a catheter shaft, the carrier segment having an outer surface sized to temporarily hold the stent-valve in the distal section of the outer delivery sheath, wherein at least a portion of the catheter shaft is located within and coaxial to the outer delivery sheath; and
a delivery segment located coaxially to the outer delivery sheath, the delivery segment having an outer surface sized to radially fit within the stent-valve after detaching the stent-valve from the carrier segment when the stent-valve resides within the distal section of the outer delivery sheath, wherein the delivery segment is configured to deploy the stent-valve at the location of the native heart valve seat.
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Accused Products
Abstract
A dual-balloon delivery catheter system includes a carrier segment that is a lead/carrier balloon or mandrel at a distal portion of a catheter. The carrier segment is sequentially arrayed with a more proximally positioned delivery segment, wherein the delivery segment is a delivery balloon or mandrel. The first carrier segment expands the stent-valve a sufficient amount to receive the delivery segment after the carrier segment is moved away from the sent-valve. The delivery segment is then positioned at the target site and the stent-valve is then deployed.
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Citations
11 Claims
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1. A system for treating a native heart valve in a patient using endoluminal delivery through vasculature of a patient to a native heart valve seat, the system comprising:
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a stent-valve; an outer delivery sheath including a distal section, wherein at least a portion of the outer delivery sheath is sized for insertion into the vasculature of the patient, wherein at least a portion of the distal section of the outer delivery sheath is expandable and comprises a plurality of piezo-ceramic elements configured to expand the distal section of the outer delivery sheath upon electrically activating the plurality of piezo-ceramic elements; a carrier segment located at a distal portion of a catheter shaft, the carrier segment having an outer surface sized to temporarily hold the stent-valve in the distal section of the outer delivery sheath, wherein at least a portion of the catheter shaft is located within and coaxial to the outer delivery sheath; and a delivery segment located coaxially to the outer delivery sheath, the delivery segment having an outer surface sized to radially fit within the stent-valve after detaching the stent-valve from the carrier segment when the stent-valve resides within the distal section of the outer delivery sheath, wherein the delivery segment is configured to deploy the stent-valve at the location of the native heart valve seat. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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Specification