US 12,029,863 B2
Intravascular treatment site access
Michelle Tran, Fountain Valley, CA (US); Tetsu Sumida, Irvine, CA (US); Mayank Goyal, Calgary (CA); and Joseph A. Gulachenski, Trabuco Canyon, CA (US)
Assigned to MicroVention, Inc., Aliso Viejo, CA (US)
Filed by MicroVention, Inc., Aliso Viejo, CA (US)
Filed on May 8, 2020, as Appl. No. 16/870,603.
Application 16/870,603 is a continuation of application No. 15/430,402, filed on Feb. 10, 2017, granted, now 10,682,493.
Claims priority of provisional application 62/293,522, filed on Feb. 10, 2016.
Prior Publication US 2020/0269012 A1, Aug. 27, 2020
Int. Cl. A61M 25/00 (2006.01); A61B 17/221 (2006.01); A61M 25/06 (2006.01); A61M 25/09 (2006.01); A61B 17/22 (2006.01); A61M 25/01 (2006.01)
CPC A61M 25/0041 (2013.01) [A61B 17/221 (2013.01); A61M 25/0023 (2013.01); A61M 25/0045 (2013.01); A61M 25/0662 (2013.01); A61M 25/09 (2013.01); A61M 25/09016 (2013.01); A61B 2017/22044 (2013.01); A61B 2017/2212 (2013.01); A61B 2017/2215 (2013.01); A61M 2025/0042 (2013.01); A61M 2025/0046 (2013.01); A61M 25/0068 (2013.01); A61M 25/0108 (2013.01); A61M 2025/0183 (2013.01); A61M 2025/0681 (2013.01); A61M 25/09041 (2013.01); A61M 25/0905 (2013.01); A61M 2025/09116 (2013.01); A61M 2025/09166 (2013.01); A61M 2025/09175 (2013.01); A61M 2205/0266 (2013.01)] 23 Claims
OG exemplary drawing
 
1. A microcatheter used to navigate through a blood vessel bifurcation region for addressing a ledge effect, comprising:
a microcatheter body having a guidewire passage therethrough;
a bulb having an enlarged outer diameter relative to a proximal portion of the microcatheter body; the bulb being comprised of a polymeric material;
wherein, in a delivery configuration, the bulb of the microcatheter is located within a lumen of a guide catheter, wherein the lumen has an inner diameter being at most about 0.003 inches greater than the enlarged outer diameter of the bulb; and,
a distal tip distal to the bulb and having an outer diameter smaller than the enlarged outer diameter of the bulb.