Methods for creating woven devices
First Claim
1. A device comprising:
- a plurality of shape memory wires woven together to form a body suitable for implantation into an anatomical structure, the body having first and second ends, the shape memory wires crossing each other to form a plurality of angles, at least one of the angles being obtuse, and both ends of at least one shape memory wire being located proximate one end of the body;
wherein the value of the at least one obtuse angle may be increased by axially compressing the body.
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Accused Products
Abstract
Self-expandable, woven intravascular devices for use as stents (both straight and tapered), filters (both temporary and permanent) and occluders for insertion and implantation into a variety of anatomical structures. The devices may be formed from shape memory metals such as nitinol. The devices may also be formed from biodegradable materials. Delivery systems for the devices include two hollow tubes that operate coaxially. A device is secured to the tubes prior to the implantation and delivery of the device by securing one end of the device to the outside of the inner tube and by securing the other end of the device to the outside of the outer tube. The stents may be partially or completely covered by graft materials, but may also be bare. The devices may be formed from a single wire. The devices may be formed by either hand or machine weaving. The devices may be created by bending shape memory wires around tabs projecting from a template, and weaving the ends of the wires to create the body of the device such that the wires cross each other to form a plurality of angles, at least one of the angles being obtuse. The value of the obtuse angle may be increased by axially compressing the body.
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Citations
70 Claims
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1. A device comprising:
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a plurality of shape memory wires woven together to form a body suitable for implantation into an anatomical structure, the body having first and second ends, the shape memory wires crossing each other to form a plurality of angles, at least one of the angles being obtuse, and both ends of at least one shape memory wire being located proximate one end of the body;
wherein the value of the at least one obtuse angle may be increased by axially compressing the body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A device comprising:
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a body suitable for implantation into an anatomical structure, the body having a first end, a second end and being defined by at least n shape memory wires, wherein n is greater than one, the n shape memory wires being arranged such that the body comprises a first portion, the first portion comprising a first woven portion and at least one strut, the shape memory wires of the first woven portion crossing each other to form a plurality of angles, at least one of the angles being obtuse, and both ends of at least one shape memory wire being located proximate one end of the body;
wherein the value of the at least one obtuse angle may be increased by axially compressing the body. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36)
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37. A device comprising:
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a plurality of biodegradable filaments woven together to form a self-expanding body suitable for implantation into an anatomical structure, the self-expanding body having first and second ends, the biodegradable filaments crossing each other to form a plurality of angles, at least one of the angles being obtuse;
wherein the value of the at least one obtuse angle may be increased by axially compressing the self-expanding body.
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38. A method of creating a body suitable for implantation into an anatomical structure, the body having two ends, the method comprising:
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bending the shape memory wires in a plurality of shape memory wires to create bent portions in the shape memory wires, the bent portions being arranged to define one end of the body, each shape memory wire having two ends; and
weaving the ends of the shape memory wires to create the body such that the shape memory wires cross each other to form a plurality of angles, at least one of the angles being obtuse;
wherein the value of the at least one obtuse angle may be increased by axially compressing the body. - View Dependent Claims (39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50)
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51. A method of creating a body suitable for implantation into an anatomical structure, the body having two ends, the method comprising:
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providing a weaving system comprising;
a template having first template projections;
bending shape memory wires around the first template projections to create bent portions in the shape memory wires, the bent portions being arranged to define one end of the body, each shape memory wire having two ends; and
weaving the ends of the shape memory wires around the template to create the body such that the shape memory wires cross each other to form a plurality of angles, at least one of the angles being obtuse;
wherein the value of the at least one obtuse angle may be increased by axially compressing the body. - View Dependent Claims (52, 53, 54, 55, 56, 57, 58, 59, 60, 61)
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62. A device for delivering an axially and radially expandable woven body having two ends into an anatomical structure, comprising:
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a first tube configured to accept a guide wire; and
a second tube configured to fit over the first tube;
wherein when the tubes are used for delivering the axially and radially expandable woven body, one end of the axially and radially expandable woven body is secured to the outside of the first tube and the other end of the axially and radially expandable woven body is secured to the outside of the second tube. - View Dependent Claims (63, 64, 65)
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66. A device for delivering an axially and radially expandable woven body having two ends into an anatomical structure, comprising:
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a first tube configured to accept a guide wire, the first tube having at least one pair of first tube holes positioned proximate one end of the first tube;
a second tube configured to fit over the first tube, the second tube having at least one pair of second tube holes positioned proximate one end of the second tube;
a first securing wire configured to be threaded through the at least one pair of first tube holes; and
a second securing wire configured to be threaded through the at least one pair of second tube holes;
wherein when the tubes are used for delivering the axially and radially expandable woven body, one end of the axially and radially expandable woven body is secured to the outside of the first tube with the first securing wire and the other end of the axially and radially expandable woven body is secured to the outside of the second tube with the second securing wire.
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67. An occluding system comprising:
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a plurality of shape memory wires woven together to form a body useful for occluding an anatomical structure, the body having first and second ends, both ends of at least one shape memory wire being located proximate one end of the body, the shape memory wires crossing each other to form a plurality of angles, at least one of the angles being obtuse;
wherein the value of the at least one obtuse angle may be increased by axially compressing the body.
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68. A device comprising:
a body suitable for implantation into an anatomical structure, the body having an axis, a first end and a second end, wherein the body comprises a shape memory wire having a first segment and a second segment, the segments being separated by a bend in the shape memory wire located proximate one end of the body, the first segment extending helically in a first direction around the axis toward the other end of the body, the second segment extending helically in a second direction around the axis toward the other end of the body, and the first and second segments crossing each other in a plurality of locations.
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69. A device comprising:
a body suitable for implantation into an anatomical structure, the body having a first end and a second end, wherein the body comprises a shape memory wire having a first segment and a second segment, the segments being separated by a bend in the wire located proximate one end of the body, the first segment and second segments being arranged to form loops and twisted segments such that at least two contiguous loops are separated from another loop by a twisted segment.
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70. A device comprising:
a body suitable for implantation into an anatomical structure, the body having two ends and comprising a shape memory wire having a first segment and a second segment, the segments being separated by a bend in the wire located proximate one end of the body, the segments being positioned adjacent to each other in loop-defining locations, the segments also extending between the loop-defining locations in spaced relation to each other so as form at least two loops, at least one of the at least two loops having a compressed shape.
Specification