Vascular devices and methods with distal protection
First Claim
1. An expandable medical device, comprising:
- a treatment section forming a cylindrical structure comprising a proximal end and a distal end;
wherein the cylindrical structure has a curled mesh structure such that a seam extends along a longitudinal axis of the expandable medical device;
wherein the treatment section is configured to be delivered in a volume-reduced form having overlapping edges; and
wherein the cylindrical structure is configured to at least partially uncurl to allow the treatment section to assume a volume-enlarged form;
a filter section attached to the treatment section, forming a conical structure, and comprising (i) a first section, distal to the treatment section, wherein the first section is configured to have overlapping first edges while the treatment section is in the volume-reduced form, and wherein the first edges are configured not to overlap while the treatment section is in the volume-enlarged form; and
(ii) a second section, distal to the first section, wherein the second section is configured to have overlapping second edges while the treatment section is in the volume-reduced form and while the treatment section is in the volume-enlarged form.
2 Assignments
0 Petitions
Accused Products
Abstract
A device for treating a thrombus in a blood vessel includes a treatment section and a filter section. The treatment section can be generally cylindrical and comprise a plurality of individual filaments and individual cells, as well as a first edge and a second edge along a longitudinal axis of the device. A varying degree of overlap of the first edge and the second edge may be provided as the device transitions from a volume-reduced form to an expanded form. The filter section can be generally conical and accommodate the variable degree of overlap by providing a first section, distal to the treatment section, that has a variable degree of overlap with a non-continuous, interrupted surface. A second section, distal to the first section, has a continuous surface for providing effective filtering of debris and emboli dislodged from the thrombus during action upon the thrombus by the treatment section.
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Citations
20 Claims
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1. An expandable medical device, comprising:
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a treatment section forming a cylindrical structure comprising a proximal end and a distal end;
wherein the cylindrical structure has a curled mesh structure such that a seam extends along a longitudinal axis of the expandable medical device;
wherein the treatment section is configured to be delivered in a volume-reduced form having overlapping edges; and
wherein the cylindrical structure is configured to at least partially uncurl to allow the treatment section to assume a volume-enlarged form;a filter section attached to the treatment section, forming a conical structure, and comprising (i) a first section, distal to the treatment section, wherein the first section is configured to have overlapping first edges while the treatment section is in the volume-reduced form, and wherein the first edges are configured not to overlap while the treatment section is in the volume-enlarged form; and
(ii) a second section, distal to the first section, wherein the second section is configured to have overlapping second edges while the treatment section is in the volume-reduced form and while the treatment section is in the volume-enlarged form. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A self-expanding device for treating a thrombus, comprising:
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a treatment section forming a generally cylindrical shape and comprising a seam along a longitudinal axis of the treatment section, the seam forming two edges extending generally longitudinally along the treatment section;
wherein the treatment section is configured to have a generally rolled, tubular configuration with the edges of the treatment section being overlapped in a volume-reduced rolled configuration such that the treatment section has multiple layers in at least one radial direction when the treatment section is in the volume-reduced rolled configuration;
wherein the treatment section is configured to self-expand from the volume-reduced rolled configuration to an expanded configuration; anda filter section attached to the treatment section, forming a generally conical configuration, and comprising (i) a first section, distal to the treatment section, having a circumferentially continuous surface while the treatment section is in the volume-reduced rolled configuration and a circumferentially interrupted surface while the treatment section is in the expanded configuration and (ii) a second section, distal to the first section, having a circumferentially continuous surface while the treatment section is in the volume-reduced rolled configuration and while the treatment section is in the expanded configuration. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A thrombectomy device, comprising:
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a treatment section forming a cylindrical structure comprising a proximal end, a distal end, and a plurality of cells;
wherein the cylindrical structure has a curled mesh structure such that a seam extends along a longitudinal axis of the thrombectomy device, wherein the treatment section is configured to at least partially uncurl from a volume-reduced form to a volume-enlarged form;a filter section attached to the treatment section, the filter section forming a conical structure, the filter section comprising a main body, a proximal edge of the main body, and a plurality of fingers, at least a portion of the main body being of a preformed unsintered polymer material, each of the plurality of fingers wrapped through a respective one of the plurality of cells of the treatment section, at least a portion of each of the plurality of fingers being sintered to the main body, at least a portion of the filter section covering a portion of an inner surface of the treatment section, at least a portion of the filter section covering a portion of an outer surface of the treatment section, the main body comprising (i) a first section configured to have overlapping first edges while the treatment section is in the volume-reduced form, and wherein the first edges are configured not to overlap while the treatment section is in the volume-enlarged form; and
(ii) a second section, distal to the first section, wherein the second section is configured to have overlapping second edges while the treatment section is in the volume-reduced form and while the treatment section is in the volume-enlarged form. - View Dependent Claims (18, 19, 20)
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Specification