Safeplus International Holdings Ltd. (ACAI)

[b9molecule]

new MRI stent patent application


United States Patent Application 20050240100
Kind Code A1
Wang, Xingwu ; et al. October 27, 2005

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MRI imageable medical device


Abstract
A coated assembly with an inductance of from about 0.1 to about 5 nanohenries and a capacitance of from about 0.1 to about 10 nanofarads. The coated assembly contains a stent and a coating. When the assembly is exposed to radio frequency electromagnetic radiation with a frequency of from 10 megahertz to about 200 megahertz, at least 90 percent of the electromagnetic radiation penetrates to the interior of the stent.


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Inventors: Wang, Xingwu; (Wellsville, NY) ; Greenwald, Howard J.; (Rochester, NY)
Correspondence Name and Address: HOWARD J. GREENWALD P.C.
349 W. COMMERCIAL STREET SUITE 2490
EAST ROCHESTER
NY
14445-2408
US


Serial No.: 085726
Series Code: 11
Filed: March 21, 2005

U.S. Current Class: 600/431; 174/35R; 623/1.15; 623/1.46
U.S. Class at Publication: 600/431; 623/001.46; 623/001.15; 174/035.00R
Intern'l Class: A61F 002/06



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Claims

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We claim:

1. A medical device comprised of a lumen wherein, when said device is exposed to radio frequency electromagnetic radiation with a frequency of from 10 megahertz to about 200 megahertz, at least 90 percent of the electromagnetic radiation penetrates to the lumen of the device; and the concentration of the electromagnetic radiation that penetrates to the lumen of the device is substantially identical at different points within such lumen.

2. A coated medical device assembly comprised of a medical device, a coating disposed on said medical device, and a cavity disposed within said medical device, wherein: (a) said coating is comprised of material with a dielectric constant of from about 1 to about 2,000, and (b) when said medical device is exposed to radio frequency electromagnetic radiation with a frequency of from 10 megahertz to about 200 megahertz, at least 90 percent of the electromagnetic radiation penetrates to the cavity of said medical device; and the concentration of the electromagnetic radiation that penetrates to said cavity of said device is substantially identical at different points within said cavity.

3. The medical device assembly as recited in claim 2, wherein said medical device is a stent.