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US 11,229,440 B2Granted
Systems and methods for vascular occlusion
AssigneeBoston Scientific Scimed, Inc.
InventorsRobert Squire, Joel Munsinger, Derek Larson, Martin Willard, Joseph Connolly
Life of this patent
Estimating the term…
Abstract
Expandable occlusive plugs and methods of using them are disclosed. The devices generally include an expandable framework at least partially covered by a membrane. The occlusive plugs can be used for occlusion of body lumens and/or to limit migration of embolic agents to non-target sites.
Claims20
An occlusive system, comprising:
- an expandable device comprising:
- an elongate shaft comprising a distal end and a proximal end;
- a flexible framework comprising a distal end disposed at the distal end of the elongate shaft, a proximal end, and a length therebetween, the flexible framework moveable between a compressed configuration wherein the proximal end of the flexible framework has a first outer diameter and an uncompressed configuration wherein the proximal end of the flexible framework has a second outer diameter larger than the first outer diameter;
- and
- a membrane at least partially covering the flexible framework;
- a pushrod comprising a distal tip configured to deliver the expandable device;
- and
- a dissolvable sleeve disposed along the flexible framework proximate the proximal end of the framework and having a length flexible less than the length of the flexible framework, the dissolvable sleeve further disposed about the distal tip of the pushrod, the dissolvable sleeve configured to constrain the proximal end of the flexible framework in the compressed configuration, and the dissolvable sleeve configured to detachably couple the proximal end of the elongate shaft to the distal tip of the pushrod.
5 more elements
An occlusive system, comprising:
- an expandable device comprising:
- an elongate shaft comprising a proximal end and a distal end;
- a flexible framework comprising a plurality of wires with wire ends, each wire having a midportion disposed at the distal end of the elongate shaft and the wire ends of each wire bendable towards the proximal end of the elongate shaft, the flexible framework moveable between a compressed configuration wherein the wire ends of the plurality of wires form a first outer diameter and an uncompressed configuration wherein the wire ends of the plurality of wires form a second outer diameter larger than the first outer diameter;
- and
- a membrane covering at least a portion of the flexible framework;
- a pushrod comprising a distal tip configured to deliver the expandable device;
- and
- a dissolvable sleeve disposed about the wire ends of the plurality of wires and proximal to the midportion of the plurality of wires, the dissolvable sleeve further disposed about the distal tip of the pushrod, the dissolvable sleeve configured to constrain the flexible framework in the compressed configuration and detachably couple the proximal end of the elongate shaft to the distal tip of the pushrod.
5 more elements
A method of delivering an occlusive device, comprising:
- inserting an occlusive device into a body lumen via a distal end of a pushrod, the device comprising a flexible framework constrained by a dissolvable sleeve about an elongate member, the dissolvable sleeve having a length less than the length of the flexible framework, the dissolvable sleeve configured to detachably couple a proximal end of the elongate shaft to a distal tip of the pushrod;
- delivering the occlusive device into the body lumen by exposing the occlusive device to a body fluid such that the dissolvable sleeve dissolves, allowing the flexible framework to transition from a compressed configuration to an uncompressed configuration and the elongate member to detach from the distal tip of the pushrod.
Dependencies are inferred from the claim text.