Reinforced multi-lumen catheter
AssigneeC.R. Bard, Inc.
InventorsRyan C. Patterson, Walter Shang
Life of this patent
Estimating the term…
Abstract
A reinforced multi-lumen catheter and method of manufacturing the same. An assembly for manufacturing the multi-lumen catheter includes a catheter body substrate including a septum, one or more mandrels, a reinforcing element and one or more sleeves. The septum may have a distal region with a cross-sectional thickness greater than that of a proximal region. The septum can be separately formed. The septum can be split along a length of the distal region. The reinforcing element can be positioned over at least a proximal region of the catheter body substrate.
Claims17
A method of making a multi-lumen catheter, comprising:
- providing an assembly comprising:
- a catheter body substrate comprising an outer wall and a septum, the outer wall and the septum defining first and second lumens, the septum comprising a proximal region and a distal region;
- a first mandrel and a second mandrel inserted respectively into the first lumen and the second lumen;
- a reinforcing element positioned over at least a proximal region of the catheter body substrate;
- a sleeve positioned over the reinforcing element and catheter body substrate;
- shrink tubing positioned over the sleeve;
- heating the assembly;
- and
- splitting the septum distal region from the distal end to a predetermined dividing point, the dividing point being distal of the septum proximal region.
A method of making a multi-lumen catheter, comprising:
- providing a cylindrical tube including a reinforcing region;
- inserting an independently-formed septum into the tube to define two or more lumens therein;
- and
- bonding the septum to the tube.
A method of making a multi-lumen catheter, comprising:
- combining an independently-formed septum with two or more mandrels, the mandrels and septum together forming a substantially circular cross-sectional shape;
- wrapping an elongate member around the mandrels and septum to form an assembly, the elongate member comprising a coated reinforcing element;
- heating the assembly.
A method of making a multi-lumen catheter, comprising:
- creating an assembly, comprising:
- providing a first catheter body substrate comprising a first lumen and a second catheter body comprising a second lumen, each substrate having a substantially semi-circular cross-sectional shape;
- inserting a first mandrel into the first lumen and a second mandrel into the second lumen, wherein the first and second mandrels extend beyond both proximal and distal ends of the substrates;
- arranging the first and second substrates to form a substantially circular cross-sectional shape;
- positioning a reinforcing element over at least a proximal region of the first and second substrates;
- positioning a sleeve over the reinforcing element and first and second substrates;
- inserting a shim between the first and second substrates at a distal end thereof;
- heating the assembly;
- and
- cutting the sleeve along the position of the shim and removing the shim.
Dependencies are inferred from the claim text.