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 clot retrieval catheter comprising: an expansile tip comprising a porous framework, an open distal mouth disposed at the distal end of the expansile tip, a folded delivery state, and an expanded deployed state, wherein the porous framework of the expansile tip further comprises: a plurality of support arms terminating distally at proximal crown troughs, and wherein the support arms are connected distally at proximal crown troughs by crowns to form petal-shaped cells; a support tube proximal to the expansile tip comprising one or more spines and wherein at least one of the one or more spines of the support tube is respectively aligned with a support arm of the plurality of support arms; and a cover radially disposed around at least a portion of the support tube and at least a portion of the expansile tip and wherein the cover follows the contours of the crowns and support arms;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. an outer catheter; and an inner clot retrieval catheter disposed within the outer catheter, the clot retrieval catheter comprising: an expansile tip comprising a porous framework, an open distal mouth disposed at the distal end of the expansile tip, a folded delivery state, and an expanded deployed state, wherein the porous framework of the expansile tip further comprises: a plurality of support arms terminating distally at proximal crown troughs, and wherein the support arms are connected distally at proximal crown troughs by crowns to form petal-shaped cells; a support tube proximal to the expansile tip comprising one or more spines and wherein at least one of the one or more spines of the support tube is respectively aligned with a support arm of the plurality of support arms; and a cover radially disposed around at least a portion of the support tube and at least a portion of the expansile tip and wherein the cover follows the contours of the crowns and support arms;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. a plurality of support arms terminating distally at proximal crown troughs, and wherein the support arms are connected distally at proximal crown troughs by crowns to form petal-shaped cells; a support tube proximal to the expansile tip comprising one or more spines and wherein at least one of the one or more spines of the support tube is respectively aligned with a support arm of the plurality of support arms; and a cover radially disposed around at least a portion of the support tube and at least a portion of the expansile tip and wherein the cover follows the contours of the crowns and support arms;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.