Mecanismo de separación de bobina embólica con miembro distal flexible, elemento resistente al calentamiento eléctrico y elemento de polímero con memoria de forma
A separation system (10) to deliver the embolic coils (22) to a treatment site in the vasculature of a patient comprising: an elongate polymer tube FlexMem (16) having a longitudinal axis, a distal portion ( 18) and a proximal portion (20), said elongated tube polymer FlexMem (16) having a tubular wall (38) with an inner wall surface (40) defining an inner lumen (42) extending through the elongated tube polymer FlexMem (16) between the distal portion (18) and proximal portion (20) of the elongate polymer tube FlexMem (16), the distal portion of the elongated tube polymer FlexMem (16 ) having a permanent shape and a temporary basis an embolic therapeutic coil (22) removably mounted in the distal portion (18) of said elongate tube polymer FlexMem (16), said embolic coil (22) having a distal end (24) and a proximal end ( 26) a part of the head (30) having a distal portion (32) and a proximal portion (34), the distal portion (32) of the head (30) connected to the proximal end (26) of the embolic coil ( 22), and the proximal portion (34) of the head (30) connected detachably within said distal portion (18) of said elongate tube polymer FlexMem (16), said permanent shape having a configuration expanded diameter with an inner diameter 20 which is greater than an outer diameter of the head (30) and longitudinally disposed along the inner wall surface heating resistive type (44) element contained within the inner lumen (42) of the distal portion (18) of the polymer tube FlexMem (16), and (40) of the tubular wall (38) of the distal portion (18) of the polymer tube FlexMem 25 (16), and wherein said proximal portion (34) of the head (30) is configured to be separated from said distal part (18) of said elongate tube polymer FlexMem (16) by heating said distal portion (18) of the elongate polymer tube FlexMem (16) to cause said distal portion (18) of the elongated tube of polymer FlexMem (16) for switching from said temporary shape having a reduced configuration 30 in diameter to
