EXPANSION DEVICE AND METHOD FOR TREATING VASCULAR PASSAGEWAYS
First Claim
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1. A method for delivering an expandable member through the vasculature of a patient comprising:
- delivering an expandable member at a distal end of an elongate shaft to a treatment site, the expandable member having a distal end and a proximal end, the expandable member comprising an inner expandable member and a plurality of outer expandable members at least partially surrounding the inner expandable member, wherein the plurality of outer expandable members are not fixed relative to an outer surface of the inner expandable member at an area between proximal and distal ends of the inner expandable member, and each outer expandable member comprises a main section and at least one substantially narrowed section, the at least one substantially narrowed section distal and/or proximal of the main section;
expanding the inner expandable member in a passageway of the body of the patient;
expanding the plurality of outer expandable members in the passageway; and
permitting blood to pass through a plurality gaps formed between an inner surface of the passageway and outer surfaces of the inner and outer expandable members.
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Abstract
Method for delivering an expandable member to a treatment location includes an elongate shaft and an expandable member coupled to a distal end of the elongate shaft. Embodiments of the expandable member are moveable between a collapsed configuration and an expanded configuration, and have an inner expandable member and a plurality of outer expandable members that at least partially surround the inner expandable member, and are suitable for delivering prosthetic heart valves and performing vavuloplasties.
89 Citations
18 Claims
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1. A method for delivering an expandable member through the vasculature of a patient comprising:
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delivering an expandable member at a distal end of an elongate shaft to a treatment site, the expandable member having a distal end and a proximal end, the expandable member comprising an inner expandable member and a plurality of outer expandable members at least partially surrounding the inner expandable member, wherein the plurality of outer expandable members are not fixed relative to an outer surface of the inner expandable member at an area between proximal and distal ends of the inner expandable member, and each outer expandable member comprises a main section and at least one substantially narrowed section, the at least one substantially narrowed section distal and/or proximal of the main section; expanding the inner expandable member in a passageway of the body of the patient; expanding the plurality of outer expandable members in the passageway; and permitting blood to pass through a plurality gaps formed between an inner surface of the passageway and outer surfaces of the inner and outer expandable members. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method for deploying a prosthetic heart valve without rapid pacing in a patient in need thereof, the method comprising:
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positioning a prosthetic heart valve in a crimped state on an expansion device of a delivery system, the expansion device disposed at a distal end portion of a balloon catheter, the expansion device comprising; an inner expandable member and a plurality of outer expandable members at least partially surrounding the inner expandable member, the plurality of outer expandable members not fixed relative to an outer surface of the inner expandable member between proximal and distal ends of the inner expandable member, each outer expandable member comprising a main section and at least one substantially narrowed section, the at least one substantially narrowed section distal or proximal of the main section; advancing the prosthetic heart valve through the vasculature to a native heart valve; expanding the inner expandable member; expanding the outer expandable members, thereby forming a plurality of gaps in the expandable member; and permitting blood flow through a plurality of gaps, thereby deploying the prosthetic heart valve in the native heart valve without rapid pacing. - View Dependent Claims (12, 13, 14, 15, 16)
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17. A method for deploying a vavuloplasty without rapid pacing in a patient in need thereof, the method comprising:
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positioning an expansion device expansion device disposed at a distal end portion of a balloon catheter, the expansion device comprising; an inner expandable member and a plurality of outer expandable members at least partially surrounding the inner expandable member, the plurality of outer expandable members not fixed relative to an outer surface of the inner expandable member between proximal and distal ends of the inner expandable member, each outer expandable member comprising a main section and at least one substantially narrowed section, the at least one substantially narrowed section distal or proximal of the main section; advancing the expansion device through the vasculature to a native heart valve; expanding the inner expandable member; expanding the outer expandable members, thereby forming a plurality of gaps in the expandable member; and permitting blood flow through a plurality of gaps, thereby performing a valvuloplasty of the native heart valve without rapid pacing. - View Dependent Claims (18)
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Specification