Patent ID: 11903811
Assignee: C. R. BARD, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 7:
8. A vascular implant and removal apparatus for removing a vascular implant from a vessel wall comprising:
a) a vascular implant having a deployed position wherein it is secured to a blood vessel wall, wherein in said deployed position, the implant having an outer portion configured to engage a vessel wall;
b) an elongated tubular member having a wall with an outer surface and an inner surface, the wall surrounding a lumen, a distal end portion of the tubular member being a conical member;
c) an elongated extraction member having a proximal end portion and a distal end portion, said extraction member having an outer surface and configured to be positioned within the lumen of the elongated tubular member wherein the outer surface of the extraction member faces the inner surface of the tubular member, the extraction member including a helical wire and configured to move longitudinally and rotationally with respect to the elongated tubular member including a stored position wherein said helical wire is stored within the lumen of the elongated tubular member;
d) the extraction member and vascular implant defining an initial implant removal position wherein the extraction member engages said outer portion;
e) wherein a rotation of the extraction member and helical wire effects movement of the implant from the initial implant removal position to a final implant removal position;
f) a catheter having a lumen and an inner surface that contains and closely conforms to the tubular member, the tubular member being movable relative to the catheter and wherein the catheter inner surface is abutting the outer surface of the tubular member wall;
g) wherein a storage position is defined by the conical member collapsing as the catheter pushes over the conical member to fit within the catheter lumen; and
h) wherein the conical member expands when extended outside the catheter lumen.