US 11,944,327 B2
Expandable mouth aspirating clot retrieval catheter
David Vale, Galway (IE); Ronald Kelly, Galway (IE); Brendan Casey, Galway (IE); and Karl Keating, Galway (IE)
Assigned to NEURAVI LIMITED, Galway (IE)
Filed by NEURAVI LIMITED, Galway (IE)
Filed on Mar. 5, 2020, as Appl. No. 16/809,795.
Prior Publication US 2021/0275197 A1, Sep. 9, 2021
Int. Cl. A61B 17/22 (2006.01); A61M 25/00 (2006.01); A61B 17/00 (2006.01)
CPC A61B 17/22 (2013.01) [A61M 25/0074 (2013.01); A61B 2017/0084 (2013.01); A61B 2017/22079 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A system for retrieving an obstruction in a blood vessel, the system comprising:
an outer catheter; and
an inner clot retrieval catheter disposed within the outer catheter, the inner clot retrieval catheter comprising:
an expansile tip comprising a porous framework and an open distal mouth disposed at the distal end of the expansile tip, the expansile tip having a folded delivery state and an expanded deployed state;
a support tube proximal to the expansile tip comprising:
two longitudinally extending spines located on opposing sides of the support tube;
a plurality of loop ribs connected along the length of each of the two spines and external to each of the two spines, the loop ribs being axisymmetric with a longitudinal axis of the inner clot retrieval catheter and defining a lumen of the inner clot retrieval catheter extending therethrough; and
a cover radially disposed around at least a portion of the support tube and at least a portion of the expansile tip;
wherein the expansile tip has a radial dimension in the folded delivery state less than a maximum radial dimension of the expansile tip in the expanded deployed state;
wherein in the expanded deployed state, the expansile tip is self-expanded from the folded delivery state to project radially outwardly of the support tube with at least a portion of the expansile tip having the maximum radial dimension of the expansile tip; and
wherein the maximum radial dimension of the expansile tip is greater than an inner diameter of the outer catheter.