Patent ID: 9017367
Filing Date: 2015-04-28
Classification: A61F

Abstract:
1. A method of preparing a filter for delivery into a body vessel, the filter comprising a first, second, third, fourth, fifth, and sixth anchor member arranged successively counterclockwise about a circumference of the hub when viewed from a distal end of the filter, each anchor member including either a cranial extension or a caudal extension at a distal end thereof, the filter further comprising a first, second, third, fourth, fifth, and sixth locator member arranged successively counterclockwise about a circumference of the hub when viewed from the filter distal end, each locator member extending from the hub between an adjacent pair of anchor members, the method comprising: (i) constraining the anchor members in a collapsed configuration; (ii) positioning a length of the first locator member closest clockwise of the first anchor member behind the first anchor member and the second anchor member such that a distal end of the first locator member extends between the second anchor member and the third anchor member; (iii) positioning a length of the second locator member behind the second anchor member and the third anchor member such that a distal end of the second locator member extends between the third anchor member and the fourth anchor member; (iv) positioning a length of the third locator member behind the third anchor member and the fourth anchor member such that a distal end of the third locator member extends between the fourth anchor member and the fifth anchor member; (v) positioning a length of the fourth locator member behind the fourth anchor member and the fifth anchor member such that a distal end of the fourth locator member extends between the fifth anchor member and the sixth anchor member; (vi) positioning a length of the fifth locator member behind the fifth anchor member and the sixth anchor member such that a distal end of the fifth locator member extends between the sixth anchor member and the first anchor member; (vii) positioning a length of the sixth locator member behind the sixth anchor member and the first anchor member such that a distal end of the sixth locator member extends between the first anchor member and the second anchor member; (viii) verifying that the anchor members with caudal extensions are surrounded by the anchor members with cranial extensions; and (ix) pulling the filter into a delivery sheath.