Catheter Systems and Methods for Manufacture
AssigneeCovidien LP
InventorsDonald Shannon, Misty Coburn, Eric Rowson
Life of this patent
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Abstract
A method for manufacturing a catheter, includes forming a mandrel by arranging at least first and second elongate members in an at least partial longitudinal juxtaposed relation with respect to a longitudinal axis defined by the mandrel, mounting an inner liner having an internal surface about the mandrel, treating the inner liner whereby the first and second elongate members of the mandrel cause irregularities within the internal surface of the inner liner, positioning an outer member about the inner liner and removing at least the inner liner from the mandrel, thereby forming a catheter having the inner liner with irregularities.
Claims20
A method for manufacturing a catheter, comprising:
- forming a mandrel by arranging at least first and second elongate members in an at least partial longitudinal juxtaposed relation with respect to a longitudinal axis defined by the mandrel;
- mounting an inner liner having an internal surface about the mandrel;
- treating the inner liner whereby the first and second elongate members of the mandrel cause irregularities within the internal surface of the inner liner;
- positioning an outer member about the inner liner;
- and
- removing at least the inner liner from the mandrel,
- whereby a catheter is formed having the inner liner with irregularities.
A method for manufacturing a catheter, including:
- forming a mandrel by assembling at least first and second elongate members in an at least partial coiled or twisted assembled condition;
- positioning a catheter about the mandrel, the catheter having an inner surface defining a lumen;
- treating the catheter whereby the first and second elongate members cause irregularities within the internal surface of the catheter;
- disassembling the mandrel;
- and
- removing the catheter relative to the mandrel.
A mandrel for use in forming surface irregularities within an inner surface of a catheter, which comprises:
- first and second elongate members defining a longitudinal axis, the first and second elongate members having a first at least partially wound condition, and a second at least partially unwound condition, the first and second elongate members dimensioned to support an elongate catheter during treatment thereof when in the first condition, and capable of transitioning to the second condition subsequent to treatment of the catheter to facilitate removal of the catheter relative to the mandrel.
An implant delivery system, which comprises:
- a catheter defining a longitudinal axis and having an inner surface defining a longitudinal lumen, the inner surface having surface irregularities;
- and
- an implant member disposed within the longitudinal lumen of the catheter, the implant member longitudinally movable within the longitudinal lumen whereby the irregularities of the inner surface reduce friction between the implant member and the inner surface, the implant member adapted to transition from an initial constrained condition within the longitudinal lumen to an actuated expanded condition upon deployment from the catheter.
Dependencies are inferred from the claim text.