Bioabsorbable marker having radiopaque constituents and method of using the same

a radiopaque and bioabsorbable technology, applied in the field of bioabsorbable markers having radiopaque constituents “ bioabsorbableradiopaque markers, can solve the problems of not being biocompatible or biostable, compromising structural integrity, etc., and achieve the effect of improving the radiopacity and the locatability of an endoprosthesis

Inactive Publication Date: 2006-01-05
BOSTON SCI SCIMED INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008] Accordingly, there is a need for bioabsorbable-radiopaque markers for use on implantable endoprostheses in order to improve radiopacity and the locatability of an endoprosthesis during various medical procedures. Providing temporary radiopacity is especially advantageous for implantable endoprostheses having little or no radiopacity. The bioabsorbable-radiopaque markers allow radiographic identification of one or more locations of interest on an implantable endoprosthesis. Bioabsorbable-radiopaque markers in the fabric or covering materials of an implantable endoprosthesis are advantageous for indicating the location of the fabric or covering during implantation.

Problems solved by technology

A disadvantage of certain permanent radiopaque markers is that they may compromise structural integrity, may not be biocompatible or biostable, and may be more thrombogenic than the implantable endoprosthesis.

Method used

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  • Bioabsorbable marker having radiopaque constituents and method of using the same
  • Bioabsorbable marker having radiopaque constituents and method of using the same
  • Bioabsorbable marker having radiopaque constituents and method of using the same

Examples

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example 1

[0075] An absorbable threaded radiopaque marker can be in the form of a strand of poly (α-hydroxy acid) polymer containing radiopaque elements, oxides, or salts of elements with atomic numbers of from about 22 to about 83 interwoven or interbraided along a helical, circumferentail, or axial orientation on an endoprosthesis such as a stent, stent-graft, graft, filter, occlusive device, and valve. The radiopaque material has a linear attenuation coefficient of from about 10 cm−1 at 50 KeV to about 120 cm−1 at 50 KeV.

example 2

[0076] An absorbable threaded radiopaque marker can be in the form of a strand of poly (α-hydroxy acid) polymer containing radiopaque elements, oxides, or salts of elements with atomic numbers of from about 22 to about 83 disposed on one or more surfaces of an endoprosthesis such as a stent, stent-graft, graft, filter, occlusive device, and valve. The radiopaque material has a linear attenuation coefficient of from about 10 cm−1 at 50 KeV to about 120 cm−1 at 50 KeV.

example 3

[0077] An absorbable threaded radiopaque marker can be in the form of a strand of poly (α-hydroxy acid) polymer containing radiopaque elements with atomic numbers of from about 22 to about 83, loaded into hollow cores, cavities, or pores of the polymer portion and disposed on an endoprosthesis such as a stent, stent-graft, graft, filter, occlusive device, and valve. The radiopaque material has a linear attenuation coefficient of from about 10 cm−1 at 50 KeV to about 120 cm−1 at 50 KeV.

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Abstract

A temporary bioabsorbable-radiopaque marker for use on an implantable endoprosthesis. The bioabsorbable-radiopaque marker is adapted to be disposed on or adjacent an implantable endoprosthesis in a body lumen for a predetermined amount of time until the bioabsorbable and radiopaque materials are absorbed or dispersed in the body.

Description

BACKGROUND OF THE INVENTION [0001] This invention relates generally to a bioabsorbable marker having radiopaque constituents “bioabsorbable-radiopaque marker” for use on an implantable endoprosthesis such as a stent. The bioabsorbable marker includes dispersable radiopaque constituents which are not bioabsorbable or degradable, but are excreted from the body or stored in the body. [0002] Implantable endoprostheses including stents, stent-grafts, and grafts are used in percutaneous transluminal coronary angioplasty and in other medical procedures to repair and support diseased or damaged arteries and body lumens. Grafts are implanted to cover or bridge leaks or dissections in vessels. Stent-grafts are stents which generally have a porous coating attachment. Unsupported grafts are porous tubes which are typically implanted by surgical cut-down. [0003] In order to visualize the passage and placement of the implantable endoprosthesis in arteries and body lumens, many surgical procedures...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): A61F2/06A61M25/00A61B17/12A61B19/00A61F2/00A61F2/02A61F2/86A61F2/90A61L27/50A61L27/58A61M25/01
CPCA61B17/12022A61M25/0108A61B17/1214A61B17/12172A61B19/54A61F2/86A61F2/90A61F2002/30062A61F2002/3008A61F2210/0004A61F2250/0098A61L27/50A61L27/58A61L31/148A61L31/18A61B17/12109A61B90/39
Inventor STINSON, JONATHAN S.
Owner BOSTON SCI SCIMED INC
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