Impedance-matching apparatus and construction for...

Surgery – Diagnostic testing – Detecting nuclear – electromagnetic – or ultrasonic radiation

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C600S407000, C600S410000, C600S464000, C600S467000, C600S470000, C604S103000, C324S300000

Reexamination Certificate

active

10008380

ABSTRACT:
Intravascular device for matching impedances of portions of an intravascular circuit and limiting RF signal-induced heating of intravascular conductors. An intravascular device includes alternating conductive and dielectric layers and an electrically conductive coil in a configuration that effects an impedance-matching circuit. Another embodiment of an intravascular device has cylindrical inner and outer walls formed of an expandable, electrically conductive material, the inner and outer walls being separated by a compressible dielectric material. Varying the pressure in the lumen defined by the inner wall changes the spacing between the inner and outer walls, thereby changing the capacitance between the inner and outer wall. Another embodiment of an intravascular device includes one or more coaxial chokes for limiting heating caused by currents induced by RF signals. A conductive shield of the choke is formed of a conductive polymer to further reduce heating effects. Other embodiments include different transmission lines and antenna structures.

REFERENCES:
patent: 3326207 (1967-06-01), Egan
patent: 4304239 (1981-12-01), Perlin
patent: 4740752 (1988-04-01), Arakawa et al.
patent: 4899757 (1990-02-01), Pope, Jr. et al.
patent: 5050607 (1991-09-01), Bradley et al.
patent: 5109859 (1992-05-01), Jenkins
patent: 5243988 (1993-09-01), Sieben et al.
patent: 5269319 (1993-12-01), Schulte et al.
patent: 5275597 (1994-01-01), Higgins et al.
patent: 5318025 (1994-06-01), Dumoulin et al.
patent: 5354324 (1994-10-01), Gregory
patent: 5364392 (1994-11-01), Warner et al.
patent: 5405346 (1995-04-01), Grundy et al.
patent: 5438997 (1995-08-01), Sieben et al.
patent: 5470352 (1995-11-01), Rappaport
patent: 5476095 (1995-12-01), Schnall et al.
patent: 5513637 (1996-05-01), Twiss et al.
patent: 5543712 (1996-08-01), Arakawa et al.
patent: 5676151 (1997-10-01), Yock
patent: 5693082 (1997-12-01), Warner et al.
patent: 5713363 (1998-02-01), Seward et al.
patent: 5713854 (1998-02-01), Inderbitzen et al.
patent: 5728079 (1998-03-01), Weber et al.
patent: 5776176 (1998-07-01), Rudie
patent: 5792055 (1998-08-01), McKinnon
patent: 5807330 (1998-09-01), Teitelbaum
patent: 5819737 (1998-10-01), Young et al.
patent: 5840031 (1998-11-01), Crowley
patent: 5868674 (1999-02-01), Glowinski et al.
patent: 5928145 (1999-07-01), Ocali et al.
patent: 6097985 (2000-08-01), Kasevich et al.
patent: 6159225 (2000-12-01), Makower
patent: 6165127 (2000-12-01), Crowley
patent: 6263229 (2001-07-01), Atalar et al.
patent: 6284971 (2001-09-01), Atalar et al.
patent: 6304769 (2001-10-01), Arenson et al.
patent: 6458098 (2002-10-01), Kanesaka
patent: 6560475 (2003-05-01), Viswanathan
patent: 6592526 (2003-07-01), Lenker
patent: 6593884 (2003-07-01), Gilboa et al.
patent: 6606513 (2003-08-01), Lardo et al.
patent: 6628980 (2003-09-01), Atalar et al.
patent: 6675033 (2004-01-01), Lardo et al.
patent: 6699241 (2004-03-01), Rappaport et al.
patent: 2003/0016186 (2003-01-01), Watanabe et al.
patent: WO 00/33734 (2000-06-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Impedance-matching apparatus and construction for... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Impedance-matching apparatus and construction for..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Impedance-matching apparatus and construction for... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3791962

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.