Nested tubing sections and methods for making same
First Claim
1. A cannula comprising:
- an outer elongate tubular member having a proximal end, a distal end, and a lumen therebetween, the outer tubular member having a diameter;
an inner tubular member having a proximal end, a sealed distal end, and a first lumen therebetween, the inner tubular member having a diameter smaller than the diameter of the outer tubular member and being nested substantially coaxially within the lumen of the outer tubular member, so that a gap between the inner tubular member and the outer tubular member defines a second lumen;
a tubular sleeve disposed coaxially between the outer and inner tubular members at the distal end thereof;
a balloon defining an inflatable chamber mounted on a distal region of the outer tubular member, the chamber communicating with the lumen of the inner tubular member by a channel which passes radially through the inner tubular member, the tubular sleeve, and the outer tubular member.
4 Assignments
0 Petitions
Accused Products
Abstract
The invention provides a nested tubing cannula which comprises outer and inner elongate tubular members, both having a proximal end, a distal end, and a lumen therebetween. The inner tubular member is sealed at its distal end and is nested substantially coaxially within the lumen of the outer tubular member, so that the gap between the inner and the outer tubular member defines a second lumen whereas the first lumen is the lumen of the inner tubular member. A tubular sleeve is disposed coaxially between the inner and outer tubular members. A balloon is mounted on a distal region of the outer tubular member and is in communication with the first lumen. The cannula further comprises a port proximal or distal the balloon occluder and is in communication with the second lumen. Methods for making the devices herein are disclosed.
201 Citations
11 Claims
-
1. A cannula comprising:
-
an outer elongate tubular member having a proximal end, a distal end, and a lumen therebetween, the outer tubular member having a diameter; an inner tubular member having a proximal end, a sealed distal end, and a first lumen therebetween, the inner tubular member having a diameter smaller than the diameter of the outer tubular member and being nested substantially coaxially within the lumen of the outer tubular member, so that a gap between the inner tubular member and the outer tubular member defines a second lumen; a tubular sleeve disposed coaxially between the outer and inner tubular members at the distal end thereof; a balloon defining an inflatable chamber mounted on a distal region of the outer tubular member, the chamber communicating with the lumen of the inner tubular member by a channel which passes radially through the inner tubular member, the tubular sleeve, and the outer tubular member. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
-
Specification