Elongate tubular member for use in medical device shafts
First Claim
1. A delivery catheter assembly (100) for a self-expanding stent or other device deployed in a similar fashion, comprising an inner shaft (1), having proximal and distal ends, and an outer shaft (2), having proximal and distal ends, and the inner shaft is located coaxially within said outer shaft, and said outer shaft extends beyond the distal end of said inner shaft, said distal end of said outer shaft being adapted to accommodate a stent for delivery within a body lumen of a patient, characterised in that the inner shaft (1) is an elongate metallic hypotube (14) and the outer shaft (2) is an elongate metallic hypotube (12), and each of the hypotubes (12, 14) has a plurality of slots (25) cut in the side wall thereof to increase the flexibility of the hypotube, and the slots are elongate slots (25) extending about the hypotube in a spiral or circumferential path which is interrupted at intervals by solid struts (20).
1 Assignment
0 Petitions
Accused Products
Abstract
The invention relates to a delivery catheter assembly (100) for a self-expanding stent or other device deployed in a similar manner, comprising: an inner shaft (1) located coaxially within an outer shaft (2). Each of the shafts (1, 2) comprises an elongate spiral-cut outer hypotube (12, 14). Each of the hypotubes (12, 14) has a plurality of slots (25) cut in the side wall thereof to increase the flexibility of the hypotube, and the slots are elongate slots (25) extending about the hypotube in a spiral or circumferential path which is interrupted at intervals by solid struts (20).
427 Citations
13 Claims
- 1. A delivery catheter assembly (100) for a self-expanding stent or other device deployed in a similar fashion, comprising an inner shaft (1), having proximal and distal ends, and an outer shaft (2), having proximal and distal ends, and the inner shaft is located coaxially within said outer shaft, and said outer shaft extends beyond the distal end of said inner shaft, said distal end of said outer shaft being adapted to accommodate a stent for delivery within a body lumen of a patient, characterised in that the inner shaft (1) is an elongate metallic hypotube (14) and the outer shaft (2) is an elongate metallic hypotube (12), and each of the hypotubes (12, 14) has a plurality of slots (25) cut in the side wall thereof to increase the flexibility of the hypotube, and the slots are elongate slots (25) extending about the hypotube in a spiral or circumferential path which is interrupted at intervals by solid struts (20).
-
13. A catheter assembly comprising an elongate outer tubular shaft which extends from a proximal end to a distal end of the catheter and an inner tubular shaft concentrically located within the outer shaft and also extending from a proximal end to a distal end of the catheter, characterised in that each of the shafts is a stainless steel or other metallic hypotube (12, 14) and each having at least one cut (25) formed in an outer wall of the tube and extending in a substantially spiral or circumferential path about the outer wall of the tube (12, 14).
Specification