US 12,285,205 B2
Recanalizing occluded vessels using radiofrequency energy
Osamu Katoh, Nagoya (JP); and Wayne Ogata, San Ramon, CA (US)
Filed by Asahi Medical Technologies, Inc.
Filed on Nov. 5, 2019, as Appl. No. 16/674,857.
Application 16/674,857 is a continuation of application No. 15/003,098, filed on Jan. 21, 2016, granted, now 10,492,855.
Application 15/003,098 is a continuation of application No. 13/639,092, granted, now 9,271,787, issued on Mar. 1, 2016, previously published as PCT/US2011/031018, filed on Apr. 1, 2011.
Application 13/639,092 is a continuation of application No. 12/753,844, filed on Apr. 2, 2010, granted, now 9,283,034.
Application 12/753,844 is a continuation in part of application No. 12/680,500, granted, now 8,911,435, issued on Nov. 8, 2010, previously published as PCT/US2008/077403, filed on Sep. 23, 2008.
Claims priority of provisional application 60/975,473, filed on Sep. 26, 2007.
Claims priority of provisional application 61/298,547, filed on Jan. 26, 2010.
Prior Publication US 2020/0078088 A1, Mar. 12, 2020
Int. Cl. A61B 18/14 (2006.01); A61B 5/00 (2006.01); A61B 8/12 (2006.01); A61B 18/18 (2006.01); A61B 18/24 (2006.01); A61B 90/00 (2016.01); A61M 5/00 (2006.01); A61M 13/00 (2006.01); A61B 18/00 (2006.01); A61N 7/02 (2006.01)
CPC A61B 18/1492 (2013.01) [A61B 5/0059 (2013.01); A61B 8/12 (2013.01); A61B 18/18 (2013.01); A61B 18/1815 (2013.01); A61B 18/245 (2013.01); A61B 90/37 (2016.02); A61M 5/00 (2013.01); A61M 13/003 (2013.01); A61B 5/0066 (2013.01); A61B 2018/00029 (2013.01); A61B 2018/00285 (2013.01); A61B 2018/00291 (2013.01); A61B 2018/0041 (2013.01); A61B 2018/00839 (2013.01); A61B 2018/00982 (2013.01); A61B 2018/1861 (2013.01); A61B 18/24 (2013.01); A61B 2090/378 (2016.02); A61B 2090/3782 (2016.02); A61N 7/022 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A catheter positioning system, comprising:
a balloon catheter comprising an inflatable balloon and a delivery catheter disposed within the balloon catheter, wherein the balloon is configured to have an inflated state to engage a body vessel and fix a position of the balloon catheter with respect to the body vessel, wherein the delivery catheter and the balloon catheter are configured to have opposing surfaces each with a portion of a movable mating engagement structure, wherein the portions of the moveable mating engagement structure comprise: helical grooves; and receiving grooves; wherein the portion of a movable mating engagement structure on the opposing surface of the balloon catheter is positioned within an outer periphery of the inflatable balloon and extends along an entire length of the inflatable balloon; and wherein when the balloon is in the inflated state to engage the body vessel the position of the balloon catheter is configured to be fixed with respect to the body vessel while, with the movable mating engagement structure, the delivery catheter is enabled for advancement through the balloon catheter.