Reinforced multi-lumen catheter
First Claim
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1. A reinforced multi-lumen catheter, comprising:
- an elongate body including 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, the septum distal region including a cross-sectional thickness greater than a cross-sectional thickness of the septum proximal region;
a reinforcing region comprising a reinforcing element positioned over a length of the elongate body, the reinforcing region extending over the septum proximal region and at least a proximal portion of the septum distal region; and
a sleeve positioned over the reinforcing element and the elongate body, the septum distal region being split from a distal end thereof to a dividing point to form a first tip section and a second tip section, the dividing point being located distal the reinforcing region.
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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.
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Citations
22 Claims
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1. A reinforced multi-lumen catheter, comprising:
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an elongate body including 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, the septum distal region including a cross-sectional thickness greater than a cross-sectional thickness of the septum proximal region;
a reinforcing region comprising a reinforcing element positioned over a length of the elongate body, the reinforcing region extending over the septum proximal region and at least a proximal portion of the septum distal region; and
a sleeve positioned over the reinforcing element and the elongate body, the septum distal region being split from a distal end thereof to a dividing point to form a first tip section and a second tip section, the dividing point being located distal the reinforcing region. - View Dependent Claims (2, 3, 4, 5)
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6. A method of making a multi-lumen catheter, comprising:
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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. - View Dependent Claims (7, 8, 9, 10, 11)
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12. A method of making a multi-lumen catheter, comprising:
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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. - View Dependent Claims (13, 14, 15)
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16. A method of making a multi-lumen catheter, comprising:
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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. - View Dependent Claims (17, 18)
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19. A method of making a multi-lumen catheter, comprising:
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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. - View Dependent Claims (20, 21, 22)
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Specification