THROMBUS MANAGEMENT SYSTEM
First Claim
1. A system comprising a plurality of expandable tip assemblies configured to address an occlusive thrombus within a blood vessel for providing progressive therapy without distal embolic protection, the system comprising:
- a first expandable tip assembly comprising a first elongate member and a first self-expanding scaffold;
wherein the first self-expanding scaffold is coupled to a distal end of the first elongate member;
wherein the first self-expanding scaffold comprises an open distal end without a distal embolic protection member or device;
wherein the first self-expanding scaffold comprises open cells formed by a pattern of struts and bridges, wherein said cells have a cell size configured to hinder penetration of thrombus material within the first self-expanding scaffold, thereby increasing an amount of blood flow through the first self-expanding scaffold; and
a second expandable tip assembly comprising a second elongate member and a second self-expanding scaffold;
wherein the second self-expanding scaffold is coupled to a distal end of the second elongate member;
wherein the second self-expanding scaffold comprises an open distal end without a distal embolic protection member or device;
wherein the second self-expanding scaffold comprises open cells formed by a pattern of struts and bridges, wherein said cells have a cell size larger than the cell size of the first self-expanding scaffold, wherein said cell size of the second self-expanding scaffold is configured to enhance penetration of thrombus material within the scaffold to facilitate capture of the thrombus;
wherein, in use, the first self-expanding scaffold and the second self-expanding scaffold are adapted to radially self-expand from a non-expanded configuration to an expanded configuration and to transition from the expanded configuration to the non-expanded configuration upon unsheathing and re-sheathing of the first and second self-expanding scaffolds.
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Accused Products
Abstract
Systems, methods, and devices for the treatment of acute ischemic stroke that provide immediate blood flow restoration to a vessel occluded by a clot and, after reestablishing blood flow, address the clot itself. Immediate blood flow restoration advantageously can facilitate natural lysis of the clot and also can reduce or obviate the concern for distal embolization due to fragmentation of the clot. Several embodiments of the invention provide for progressive, or modular, treatment based upon the nature of the clot. For example, the progressive treatment can include immediate restoration of blood flow, in-situ clot management, and/or clot removal depending on the particular circumstances of the treatment. The in-situ clot management can include, for example, lysis, maceration, and/or removal.
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Citations
25 Claims
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1. A system comprising a plurality of expandable tip assemblies configured to address an occlusive thrombus within a blood vessel for providing progressive therapy without distal embolic protection, the system comprising:
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a first expandable tip assembly comprising a first elongate member and a first self-expanding scaffold; wherein the first self-expanding scaffold is coupled to a distal end of the first elongate member; wherein the first self-expanding scaffold comprises an open distal end without a distal embolic protection member or device; wherein the first self-expanding scaffold comprises open cells formed by a pattern of struts and bridges, wherein said cells have a cell size configured to hinder penetration of thrombus material within the first self-expanding scaffold, thereby increasing an amount of blood flow through the first self-expanding scaffold; and a second expandable tip assembly comprising a second elongate member and a second self-expanding scaffold; wherein the second self-expanding scaffold is coupled to a distal end of the second elongate member; wherein the second self-expanding scaffold comprises an open distal end without a distal embolic protection member or device; wherein the second self-expanding scaffold comprises open cells formed by a pattern of struts and bridges, wherein said cells have a cell size larger than the cell size of the first self-expanding scaffold, wherein said cell size of the second self-expanding scaffold is configured to enhance penetration of thrombus material within the scaffold to facilitate capture of the thrombus; wherein, in use, the first self-expanding scaffold and the second self-expanding scaffold are adapted to radially self-expand from a non-expanded configuration to an expanded configuration and to transition from the expanded configuration to the non-expanded configuration upon unsheathing and re-sheathing of the first and second self-expanding scaffolds. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25)
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Specification