US 11,871,948 B2
Embolectomy device having multiple semi-tubular clot engaging structures
Ryan M. Grandfield, Livermore, CA (US); and Aleksandr Leynov, Walnut Creek, CA (US)
Assigned to Stryker Corporation, Kalamazoo, MI (US); and Stryker, European Holdings I, LLC, Kalamazoo, MI (US)
Filed by STRYKER CORPORATION, Kalamazoo, MI (US); and STRYKER EUROPEAN HOLDINGS I, LLC, Kalamazoo, MI (US)
Filed on Aug. 30, 2021, as Appl. No. 17/461,890.
Application 17/461,890 is a continuation of application No. 16/488,121, granted, now 11,116,529, previously published as PCT/US2018/019292, filed on Feb. 22, 2018.
Claims priority of provisional application 62/463,419, filed on Feb. 24, 2017.
Prior Publication US 2021/0386444 A1, Dec. 16, 2021
Int. Cl. A61B 17/221 (2006.01); A61B 17/22 (2006.01)
CPC A61B 17/221 (2013.01) [A61B 2017/2215 (2013.01); A61B 2017/22034 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An elongate embolectomy device biased to transition from a radially constrained configuration to a radially expanded configuration, the embolectomy device comprising:
a plurality of elongate clot engaging structures, each clot engaging structure comprising a plurality of interconnected struts forming an open cell pattern, and having a proximal active portion and a distal protective portion,
wherein, when the embolectomy device is in the radially expanded configuration, the active portion of each clot engaging structure has a semi-tubular arcuate profile, including a convex face and a concave face facing opposite the convex face, the clot engaging structures being longitudinally disposed relative to each other such that the concave faces of the active portions are facing radially outward, and
wherein, when the embolectomy device is in the radially expanded configuration, the protective portion of each clot engaging structure has a semi-tubular arcuate profile, including a convex face and an concave face facing opposite the convex face, wherein the convex faces of the protective portions are facing radially outward, and the concave surfaces of the protective portions are facing radially inward, respectively, relative to the longitudinal axis of the embolectomy device.