Patent ID: 7955344

Claim:
A method of capturing and retrieving a thrombus within vasculature of a living organism comprising: inserting into the vasculature a medical device comprising: a macrocoil having a first set of loops therein in a thrombus engaging component having a length with a proximal end and a distal end, the length of the macrocoil comprising microcoils having a second set of loops therein that allow the length of the macrocoil and the microcoils to be extendable; a first wire capable of providing force on the distal end of the macrocoil; a second wire capable of providing force on the proximal end of the macrocoil; the macrocoil loops retracting to a size fitting into a catheter having a diameter of about 1 mm or less when in the lumen, and the microcoil expanding to a width of at least twice the size of the macrocoil loops in the catheter when removed from the lumen and distended by relative movement between the first wire and second wire; positioning at least a portion of the macrocoil past a thrombus; adjusting the position of section of the macrocoil with respect to the thrombus by movement of at least one of the first wire and second wire to alter dimensions on both the first set of loops in the macrocoil and the dimensions of the second set of loops in the microcoils; entraining the thrombus within coils of the macrocoil by movement of at least one of the first wire and second wire exerting force on the macrocoil and the microcoils to extend the macrocoil and the microcoils; and removing the thrombus by withdrawing the medical device from the vasculature.