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
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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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