Method and device for inserting and withdrawing a two piece stent across a constricting anatomic structure
First Claim
1. A method of placing a prosthesis into an anatomical tract that passes through an anatomical constricting structure, the prosthesis comprising a first segment, a second segment and a connection structure that flexibly connects the first and second segments, the prosthesis mounted on an insertion assembly, the method comprising:
- inserting the prosthesis and the insertion assembly into an opening in the anatomical tract;
advancing the prosthesis through the anatomical tract using the insertion assembly until at least the first segment is at least partially located on a far side of the anatomical constricting structure from the opening in the anatomical tract;
at least partially withdrawing at least a first portion of the insertion assembly from the anatomical tract relative to the prosthesis; and
manipulating at least one of a second portion of the insertion assembly and a portion of the prosthesis to obtain the connection structure extending through the anatomical constricting structure, the first segment being located entirely on the far side of the anatomical constricting structure, and the second segment being located entirely on a near side of the anatomical constricting structure relative to the opening in the anatomical tract.
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Accused Products
Abstract
A stent device and methods for inserting and removing a stent to and from an anatomical tract of a living being. The stent includes a distal segment and a proximal segment joined by a flexible connection structure. The stent is inserted using components comprising a delivery assembly such that the stent proceeds through the anatomical tract and seats the flexible connection structure of the stent in a natural constricting structure of the anatomical tract. The flexible quality of the connection structure permits the natural constricting functions of the anatomical tract to occur. The natural closure of the anatomical constricting structure stops the flow of fluid, for example, from a target organ which indicates that the stent is properly placed within the anatomical tract.
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Citations
46 Claims
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1. A method of placing a prosthesis into an anatomical tract that passes through an anatomical constricting structure, the prosthesis comprising a first segment, a second segment and a connection structure that flexibly connects the first and second segments, the prosthesis mounted on an insertion assembly, the method comprising:
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inserting the prosthesis and the insertion assembly into an opening in the anatomical tract;
advancing the prosthesis through the anatomical tract using the insertion assembly until at least the first segment is at least partially located on a far side of the anatomical constricting structure from the opening in the anatomical tract;
at least partially withdrawing at least a first portion of the insertion assembly from the anatomical tract relative to the prosthesis; and
manipulating at least one of a second portion of the insertion assembly and a portion of the prosthesis to obtain the connection structure extending through the anatomical constricting structure, the first segment being located entirely on the far side of the anatomical constricting structure, and the second segment being located entirely on a near side of the anatomical constricting structure relative to the opening in the anatomical tract. - 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, 26, 27, 28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46)
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Specification