US 12,268,587 B2
Intra vascular guidewire filter system for pulmonary embolism protection and embolism removal or maceration
Samuel Morrison, Eden Prairie, MN (US); and Chad Stark, Eden Prairie, MN (US)
Assigned to Surmodics MD, LLC, Eden Prairie, MN (US)
Filed by Surmodics MD, LLC, Eden Prairie, MN (US)
Filed on Jan. 14, 2020, as Appl. No. 16/742,662.
Application 16/742,662 is a continuation in part of application No. 15/093,916, filed on Apr. 8, 2016, granted, now 10,806,559.
Application 15/093,916 is a continuation of application No. 12/738,702, granted, now 9,827,084, previously published as PCT/US2008/081310, filed on Oct. 27, 2008.
Claims priority of provisional application 61/000,465, filed on Oct. 26, 2007.
Prior Publication US 2020/0155293 A1, May 21, 2020
Int. Cl. A61F 2/01 (2006.01); A61B 17/22 (2006.01); A61B 17/221 (2006.01); A61B 17/00 (2006.01)
CPC A61F 2/013 (2013.01) [A61B 17/22012 (2013.01); A61B 17/22032 (2013.01); A61B 17/221 (2013.01); A61F 2/012 (2020.05); A61B 2017/00778 (2013.01); A61B 2017/00867 (2013.01); A61B 2017/22001 (2013.01); A61B 2017/22035 (2013.01); A61B 2017/22038 (2013.01); A61B 2017/22042 (2013.01); A61B 2017/22054 (2013.01); A61B 2017/2212 (2013.01); A61F 2/011 (2020.05); A61F 2002/016 (2013.01); A61F 2210/0014 (2013.01); A61F 2210/0057 (2013.01); A61F 2210/0061 (2013.01); A61F 2230/0008 (2013.01); A61F 2230/0069 (2013.01); A61F 2230/008 (2013.01); A61F 2230/0086 (2013.01); A61F 2230/0093 (2013.01); A61F 2230/0097 (2013.01); A61F 2250/0036 (2013.01); A61F 2250/004 (2013.01); A61F 2250/0042 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A catheter assembly comprising:
a guidewire extending from a guidewire proximal portion to a guidewire distal portion;
first and second self-expanding deployable filters coupled with the guidewire, each of the first and second deployable filters include:
a proximal filter end, and a distal filter end, wherein one of the proximal or distal filter ends is slidably coupled along the guidewire and the other of the proximal or distal filter ends is fixed to the guidewire; and
component strands extending between the proximal and distal filter ends;
wherein the first and second deployable filters include respective first and second filter strand profiles including the respective component strands, and the first filter strand profile is statically misaligned relative to the second filter strand profile according to fixing of the one of the proximal or distal filter ends to the guidewire;
wherein the first and second deployable filters each have a cylindrical shape having proximal, distal and medial cylindrical portions;
wherein at least one of the first or second deployable filters include at least first, second and third imaging markers, wherein:
the first imaging marker is coupled at the proximal cylindrical portion of the cylindrical shape of the first or second deployable filters;
the second imaging marker is coupled at the medial cylindrical portion of the cylindrical shape of the first or second deployable filters; and
the third imaging marker is coupled at the distal cylindrical portion of the cylindrical shape of the first or second deployable filters, and at least two of the first, second or third imaging markers are unobscured in any orientation of the respective deployable filter in a deployed configuration; and
a capture sleeve catheter movably coupled along the guidewire, the capture sleeve catheter includes:
a positioning tube extending from a tube proximal portion to a tube distal portion, and the guidewire is slidably received within the positioning tube;
a capture sleeve coupled with the tube distal portion;
wherein the capture sleeve includes a tapered proximal section and a cylindrical barrel extending distally from the tapered proximal section, and in a deployed capture sleeve configuration the cylindrical barrel is configured to conform to a vessel profile between the tapered proximal section and a capture sleeve distal tip; and
wherein the capture sleeve includes first and second stacked layers of braided filaments, and the first stacked layer extends from the tapered proximal section to an elbow proximate the capture sleeve distal tip, and the second stacked layer extends from the elbow toward the tapered proximal section.