Patent ID: 6776788
Filing Date: 2004-08-17
Classification: A61B

Abstract:
An embolization device for positioning in a blood vessel, comprising an elongated wire body (1) having a front end (3), a back end, and a center line, the elongated wire body when in an unconstrained, relaxed condition has a first shape and after release from a catheter (18) assumes a complexly curved resultant shape which depends on the first shape and on the blood vessel, wherein the elongated wire body (1) when in the unconstrained, relaxed condition has at least one elongate section (4) located between the front end (3) and the back end in which a center line of the at least one section is substantially straight, and the at least one elongate section (4) has a length substantially greater than a diameter of the blood vessel and does not tend to form a distinct curl or helix in the unrestrained, relaxed condition, and wherein a front end section (2â€², 2â€³, 2â€²â€³) of the elongated wire body is curved and adapted to be frictionally locked to the blood vessel at discharge from the catheter, before the at least one section (4) has been discharged from the catheter, and wherein at pushing out from the catheter and at a front end section (2, 2â€³, 2â€²â€³) frictionally locked to the blood vessel, the at least one section (4) assumes a complexly curved shape having many vessel-crossing wire portions (20) in which the curvatures of the section vary continuously and without breakpoints.