Thrombectomy device comprising: a delivery catheter; and a self-expandable funnel, defining a distal end and a proximal end, the self-expandable funnel being positionable in a retracted position and in an extended position, the diameter of the distal end of the self-expandable funnel being greater in the extended position than in the retracted position, the self-expandable funnel being positioned inside the delivery catheter in the retracted position and at least partially outside the delivery catheter in the extended position, the self-expandable funnel comprising a covering, which is a non-permeable film made of one or combination of more than one biocompatible materials or of one or combination of more than one biocompatible elastomeric polymers or other plastic materials, and the self- expandable funnel being made of shape-memory materials; characterized in that: the self- expandable funnel is able to adapt its shape and its length to a surrounding blood vessel, such that it stops blood flow when expanded in the blood vessel, and while passing a narrow passage, adapted to narrow proportionally and also lengthen, allowing an entire thrombus to remain securely within the self-expandable funnel; the thrombectomy device further comprises an aspiration funnel catheter connected to the self-expandable funnel in its proximal end, such that the self-expandable funnel besides allowing the entire thrombus to remain securely within the self-expandable funnel is further configured to aspirate and capture the thrombus; and the self-expandable funnel, the aspiration funnel catheter and the delivery catheter are oriented along the same axis. a delivery catheter; and a self-expandable funnel, defining a distal end and a proximal end, the self-expandable funnel being positionable in a retracted position and in an extended position, the diameter of the distal end of the self-expandable funnel being greater in the extended position than in the retracted position, the self-expandable funnel being positioned inside the delivery catheter in the retracted position and at least partially outside the delivery catheter in the extended position, the self-expandable funnel comprising a covering, which is a non-permeable film made of one or combination of more than one biocompatible materials or of one or combination of more than one biocompatible elastomeric polymers or other plastic materials, and the self- expandable funnel being made of shape-memory materials; the self- expandable funnel is able to adapt its shape and its length to a surrounding blood vessel, such that it stops blood flow when expanded in the blood vessel, and while passing a narrow passage, adapted to narrow proportionally and also lengthen, allowing an entire thrombus to remain securely within the self-expandable funnel; the thrombectomy device further comprises an aspiration funnel catheter connected to the self-expandable funnel in its proximal end, such that the self-expandable funnel besides allowing the entire thrombus to remain securely within the self-expandable funnel is further configured to aspirate and capture the thrombus; and the self-expandable funnel, the aspiration funnel catheter and the delivery catheter are oriented along the same axis.