Medical implant having a curlable matrix structure and method of use
First Claim
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1. A medical device, comprising:
- a first portion comprising a first plurality of cells of a first cell size, the first portion having a distal and a proximal end, the first portion further comprising a first lateral edge extending from the proximal end to the distal end of the first portion, and a second lateral edge opposite the first lateral edge, the second lateral edge extending from the proximal to the distal end of the first portion;
a second portion comprising a second plurality of cells of a second cell size, the second portion having a distal and a proximal end, the second portion being located proximal to the first portion; and
a single connection at which the proximal end of the second portion terminates; and
a wire comprising a terminal distal end portion attached to the connection and configured to introduce the first and second portions through a microcatheter;
wherein the first portion and the second portion form a self-expandable longitudinal tube with the distal end of the first portion and the proximal end of the second portion being substantially open;
wherein the first and second lateral edges are overlapped in a coiled configuration about the longitudinal axis when the medical device is in a volume-reduced form;
wherein the proximal end of the second portion tapers toward the single connection.
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Accused Products
Abstract
A medical implant, having a proximal and a distal end, that is preformed to assume a superimposed structure at an implantation site but can be made to take on a volume-reduced form making it possible to introduce it by means of a micro-catheter and a guide wire arranged at the proximal end, with the implant in its superimposed structure assuming the form of a longitudinally open tube and having a mesh structure of interconnected strings or filaments. The implant has a tapering structure at its proximal end where the strings or filaments converge at a connection point.
296 Citations
20 Claims
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1. A medical device, comprising:
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a first portion comprising a first plurality of cells of a first cell size, the first portion having a distal and a proximal end, the first portion further comprising a first lateral edge extending from the proximal end to the distal end of the first portion, and a second lateral edge opposite the first lateral edge, the second lateral edge extending from the proximal to the distal end of the first portion; a second portion comprising a second plurality of cells of a second cell size, the second portion having a distal and a proximal end, the second portion being located proximal to the first portion; and a single connection at which the proximal end of the second portion terminates; and a wire comprising a terminal distal end portion attached to the connection and configured to introduce the first and second portions through a microcatheter; wherein the first portion and the second portion form a self-expandable longitudinal tube with the distal end of the first portion and the proximal end of the second portion being substantially open; wherein the first and second lateral edges are overlapped in a coiled configuration about the longitudinal axis when the medical device is in a volume-reduced form; wherein the proximal end of the second portion tapers toward the single connection. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method, comprising:
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providing a medical device having a first portion comprising a first plurality of cells of a first cell size, the first portion having a distal and a proximal end, the first portion comprising a first lateral edge extending from the proximal to distal end of the first portion, and a second lateral edge opposite the first lateral edge, the second lateral edge extending from the proximal to the distal end of the first portion, the medical device further comprising a second portion comprising a second plurality of cells of a second cell size, the second portion having a distal and a proximal end, the second portion located proximal the first portion, a single connection at which the proximal end of the second portion terminates, and a wire comprising a terminal distal end portion attached to the connection and configured to introduce the first and second portions through a microcatheter, wherein the first portion and the second portion form a self-expandable longitudinal tube with the distal end of the first portion and the proximal end of the second portion being substantially open; preforming the medical device to have a first preformed shape; curling the medical device into a longitudinally-shaped open tube configuration tapering toward the connection; maintaining the medical device, via a mechanical restraint, in the open tube configuration; placing the medical device in a vessel of a patient; removing the mechanical restraint; and leaving the medical device positioned in the vessel. - View Dependent Claims (12, 13, 14)
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15. A method, comprising:
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advancing a compressed medical device that is coupled to a wire towards a position in a vessel of a patient, the medical device comprising a first mesh portion comprising a plurality of cells, the first portion having a distal and a proximal end, the first portion comprising a first lateral edge extending from the proximal to distal end of the first portion, and a second lateral edge opposite the first lateral edge, the second lateral edge extending from the proximal to the distal end of the first portion, the first and second lateral edges overlapped in a coiled configuration about a longitudinal axis of the medical device, the medical device further comprising a second portion extending from the proximal end of the first portion to the wire, the second portion having a distal and a proximal end, wherein the first portion and the second portion form a self-expandable longitudinal tube with the distal end of the first portion and the proximal end of the second portion being substantially open; releasing the compressed medical device from a distal end of catheter to allow the self-expandable longitudinal tube to uncurl into a larger expanded configuration; and pulling on the wire to compress the self-expandable longitudinal tube from the larger expanded configuration and to retract the self-expandable longitudinal tube into the catheter. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification