US 9,808,332 B2
Dynamic microvalve protection device
James E. Chomas, Denver, CO (US); Leonard Pinchuk, Miami, FL (US); John Martin, Miami, FL (US); Aravind Arepally, Atlanta, GA (US); Brett E. Naglreiter, Hollywood, FL (US); and Bryan M. Pinchuk, Miami, FL (US)
Assigned to Surefire Medical, Inc., Westminster, CO (US)
Filed by Surefire Medical, Inc., Westminster, CO (US)
Filed on Jul. 22, 2015, as Appl. No. 14/806,596.
Application 14/806,596 is a continuation of application No. 13/306,105, filed on Nov. 29, 2011, granted, now 9,539,081.
Application 13/306,105 is a continuation in part of application No. 12/957,533, filed on Dec. 1, 2010, granted, now 8,696,698, issued on Apr. 15, 2014.
Application 12/957,533 is a continuation in part of application No. 12/829,565, filed on Jul. 2, 2010, granted, now 8,500,775, issued on Aug. 6, 2013.
Claims priority of provisional application 61/382,290, filed on Sep. 13, 2010.
Claims priority of provisional application 61/266,068, filed on Dec. 2, 2009.
Prior Publication US 2016/0015508 A1, Jan. 21, 2016
This patent is subject to a terminal disclaimer.
Int. Cl. A61M 29/00 (2006.01); A61F 2/06 (2013.01); A61F 2/01 (2006.01); A61B 17/12 (2006.01); A61F 2/24 (2006.01); A61B 17/00 (2006.01); A61B 17/22 (2006.01); A61M 25/00 (2006.01)
CPC A61F 2/013 (2013.01) [A61B 17/12186 (2013.01); A61F 2/01 (2013.01); A61F 2/2412 (2013.01); A61F 2/2436 (2013.01); A61M 25/0075 (2013.01); A61B 17/00491 (2013.01); A61B 2017/22082 (2013.01); A61F 2002/011 (2013.01); A61F 2002/016 (2013.01); A61F 2002/018 (2013.01); A61F 2230/0006 (2013.01); A61F 2230/008 (2013.01); A61F 2230/0067 (2013.01); A61F 2230/0076 (2013.01); A61M 25/005 (2013.01); A61M 2025/0004 (2013.01)] 19 Claims
OG exemplary drawing
 
1. An endovascular valve device for temporary use in a vessel during an intravascular procedure, comprising:
a) a first catheter having a distal end, a lumen defining an inner diameter and terminating at a distal orifice, and an outer diameter; and
b) a valve fixed to said distal end of said first catheter, said distal orifice opening into an interior of said valve, said valve having,
i) a plurality of elongate first filaments in a braid, said first filaments having a proximal end, a distal end, and a length extending therebetween,
said proximal ends of said first filaments secured relative to each other such that a central opening is provided between said secured proximal ends, said first filaments along said lengths distal of said proximal ends movable relative to each other,
said first filaments fully collapsible relative to each other into an undeployed state, and expandable from said undeployed state into a radially-expanded deployed state by a spring bias of said first filaments, and
ii) a polymeric filter coated onto said braid,
wherein once said valve is in said deployed state in the vessel, said valve is dynamically movable between an expanded valve-open configuration and a collapsed valve-closed configuration depending on a local fluid pressure about said valve such that,
when the fluid pressure is higher on a proximal side of said valve, the higher fluid pressure on said proximal side of said valve causes said valve to assume said valve-closed configuration in which said distal end of said valve assumes a first maximum diameter smaller than the diameter of the vessel such that fluid flow about the said valve and said filter is permitted, and
when said fluid pressure is higher on a distal side of said valve, the higher fluid pressure on said distal side of said valve causes said valve to assume said valve-open configuration in which said distal end of said valve assumes a second maximum diameter relatively larger than said first maximum diameter and in which said valve is adapted to contact the vessel wall.