Delivery catheter and method
First Claim
1. A delivery catheter comprising:
- a first, flexible, polymer-based tube having a proximal end, a distal end and a first tube length;
a second, metal tube secured to and extending distally from the distal end of the first tube;
the second, metal tube having a second tube length, an outside surface and an inside surface, the inside surface defining a main lumen, the outside and inside surfaces defining a tubular wall; and
flexibility enhancing relief areas along the length of the second tube, the relief areas providing localized areas of reduced bending stiffness to enhance the bending flexibility of the second, metal tube while retaining greater torsional stiffness relative to the first tube.
5 Assignments
0 Petitions
Accused Products
Abstract
A delivery catheter comprises a first, flexible, polymer-based tube and a second, metal tube at the first tube distal end. The second tube has flexibility enhancing relief areas along its length to provide localized areas of reduced bending stiffness to enhance the bending flexibility while retaining good torsional stiffness. A notched catheter has a lumen and a notched outer surface intersecting the lumen with a filament-containing layer adjacent to the outer surface. A part of the filament-containing layer is capturable between the notched surface portion and an elongate element extendable through the lumen. A generally helically coiled endoluminal prosthesis may be mounted on a pre-torqued delivery catheter to tighten the coiled endoluminal prosthesis onto the delivery catheter.
94 Citations
20 Claims
-
1. A delivery catheter comprising:
-
a first, flexible, polymer-based tube having a proximal end, a distal end and a first tube length;
a second, metal tube secured to and extending distally from the distal end of the first tube;
the second, metal tube having a second tube length, an outside surface and an inside surface, the inside surface defining a main lumen, the outside and inside surfaces defining a tubular wall; and
flexibility enhancing relief areas along the length of the second tube, the relief areas providing localized areas of reduced bending stiffness to enhance the bending flexibility of the second, metal tube while retaining greater torsional stiffness relative to the first tube. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A notched catheter comprising:
-
a catheter body having an outer surface and a longitudinally extending lumen;
the outer surface having a main surface portion and a notched surface portion, the notched surface portion extending from the main surface portion to intersect the lumen; and
a filament-containing layer adjacent to the main surface portion and the notched surface portion, whereby a portion of the filament-containing layer is capturable between the notched surface portion and an elongate element extendable through the lumen. - View Dependent Claims (11)
-
-
12. A method for making a notched catheter comprising:
-
obtaining a catheter body having an outer surface and a longitudinally extending lumen, the outer surface having a main surface portion and a notched surface portion, the notched surface portion extending from the main surface portion to intersect the lumen;
placing a filament-containing layer adjacent to the main surface portion and the notched surface portion;
inserting an elongate element through the lumen, the elongate element piercing the filament-containing layer at the notched surface portion so that a portion of the filament-containing layer is captured between the notched surface portion and the elongate element;
bonding the filament-containing layer to the catheter body; and
removing the elongate element from the lumen. - View Dependent Claims (13, 14, 15)
-
-
16. A method for mounting a generally helically coiled endoluminal prosthesis to a mounting region of a delivery catheter, the coiled endoluminal prosthesis extending in a first rotational direction, comprising:
-
placing at least a portion of the mounting region of the delivery catheter in a torqued state by rotating one section of the delivery catheter relative to another section of the delivery catheter in a second rotational direction, the second rotational direction being opposite the first rotational direction;
securing the coiled endoluminal prosthesis to the mounting region at at least two longitudinally spaced apart positions along at least a part of the torqued portion of the mounting region of the delivery catheter; and
releasing the torqued portion of the delivery catheter from the torqued state, whereby the delivery catheter has a tendency to tighten the coiled endoluminal prosthesis onto the delivery catheter. - View Dependent Claims (17, 18, 19, 20)
-
Specification