Connection of a manipulation member, including a bend without substantial surface cracks, to an endovascular intervention device

A device for intravascular intervention, the device comprising:

• an elongate manipulation member comprising a distally-located attachment portion, the attachment portion comprising a first segment, a second segment, and a bend, without any substantial surface crack, located between the first and second segments, the attachment portion having a maximum lateral dimension that is less than 4 times a maximum cross-sectional dimension of the elongate member along the attachment portion;
• an intervention element comprising a proximal end portion and a hole through the proximal end portion, the attachment portion of the elongate member extending through the hole at the bend such that the first segment and the second segment are located on different sides of the proximal end portion, the intervention element being substantially permanently attached to the elongate delivery member.

A method of using a device, the device comprising an intervention element, an elongate manipulation member comprising a distally-located hooked attachment portion extending about a proximal portion of the intervention element, the attachment portion comprising a first segment, a second segment, and a bend between the first and second segments, the bend having no substantial surface crack, the attachment portion having a maximum lateral dimension that is less than 4 times a maximum cross-sectional dimension of the elongate member along the attachment portion, and a joining element substantially permanently attaching the attachment portion to the intervention element, the method comprising:

• inserting the intervention element into a cerebral blood vessel using the elongate member;
• manipulating the device to perform a therapy;
• removing the intervention element from the cerebral blood vessel using the elongate member.