Method for making a multi-lumen catheter having a separated tip section

摘要

The present disclosure is directed to a method of manufacturing a catheter wherein a dual lumen catheter body and at least one distal tip member are separately formed and the at least one distal tip member is subsequently assembled to the dual lumen catheter body. The components may be assembled using a heating process or, alternatively, using adhesives.

主权项

1. A method of manufacturing a catheter having a separated tip configuration, the method comprising:
i) positioning a first mandrel in a distal end of a first lumen of a catheter body and in a first distal lumen portion defined by a first distal tip member; ii) positioning a second mandrel in a distal end of a second lumen of a catheter body and in a second distal lumen portion defined by a second distal tip member; and iii) with the second mandrel in the distal end of the second lumen and in the second distal lumen portion, thermally bonding the second distal tip member to the catheter body such that the second distal lumen portion is in fluid communication with the second lumen of the catheter body, wherein the thermal bonding further includes positioning a first shrink tube over the second distal tip member and applying thermal energy to the first shrink tube, and positioning a second shrink tube over the first shrink tube and over the first distal tip member and applying thermal energy to the second shrink tube, and wherein the catheter body defines a first longitudinal axis parallel to the first and second lumens, the second distal tip member defines a second longitudinal axis parallel to the second distal lumen portion, and thermal bonding the second distal tip member to the catheter body forms an oblique angle between the first and second longitudinal axes.