Appeal 2007-2018
Application 09/810,377
group consisting of tungsten, titanium, tantalum, platinum,
gold, silver, bismuth trioxide and lead, and
said shaft being distinctly less radiopaque than said distal
tip section.
2. The introducer sheath according to claim 1,
wherein said distal tip section contains between about 50% to
55% by weight of radiopaque material.
5. The introducer sheath according to claim [2,
wherein said radiopaque material is tungsten], wherein said
tungsten particles range in size from about 0.5 microns to about
25 microns.
14. An introducer sheath comprising:
a shaft extending from a proximal end to a distal end; and
a distal tip section at said distal end of said shaft,
said shaft and said distal tip section comprising
fluorinated ethylene propylene, said distal tip section containing
radiopaque particles, said shaft being distinctly less radiopaque
than said distal tip section,
said distal tip section contains between about 50% and
55% by weight of tungsten particles that range in size from
about 1.4 microns to about 1.8 microns.
17. An introducer sheath comprising:
a shaft having a proximal end portion and a distal end
portion; and
a distal tip section bonded to said shaft at said shaft distal
end portion, said distal tip section consisting essentially of
fluorinated ethylene propylene containing between about 20%
and 75% by weight of a radiopaque material, wherein said
distal tip section is distinctly more radiopaque than said shaft
section.
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